UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM N-CSR

                   CERTIFIED SHAREHOLDER REPORT OF REGISTERED
                        MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number: 811-07111

Morgan Stanley Insured California Municipal Securities
               (Exact name of registrant as specified in charter)

1221 Avenue of the Americas, New York, New York 10020
               (Address of principal executive offices) (Zip code)

Ronald E. Robison
1221 Avenue of the Americas, New York, New York 10020
                     (Name and address of agent for service)

Registrant's telephone number, including area code: 212-762-4000

Date of fiscal year end: October 31, 2003

Date of reporting period: October 31, 2003


Item 1 - Report to Shareholders


Welcome, Shareholder:

In this report, you'll learn about how your investment in Morgan Stanley Insured
California Municipal Securities performed during the annual period. We will
provide an overview of the market conditions, and discuss some of the factors
that affected performance during the reporting period. In addition, this report
includes the Trust's financial statements and a list of Trust investments.

Market forecasts provided in this report may not necessarily come to pass. There
is no assurance that the Trust will achieve its investment objective. The Trust
is subject to market risk, which is the possibility that market values of
securities owned by the Trust will decline and, therefore, the value of the
Trust shares may be less than what you paid for them. Accordingly, you can lose
money investing in this Trust.


FUND REPORT

For the year ended October 31, 2003

MARKET CONDITIONS

Over the past 12 months the tone of the U.S. economy shifted from weak to
accelerating growth culminating in 8.2 percent GDP growth in the third quarter
of 2003. One of the most closely watched economic indicators, employment
strength, was in negative territory for much of the period. Repeated comments
from government and private sector economists suggesting that the U.S. economy
might be entering a deflationary period also weighed heavily on investors during
much of the year. At the same time, ongoing budgetary and fiscal difficulties at
the state and local levels contributed to ratings downgrades for many municipal
bonds. The Federal Reserve Board attempted to allay these fears and keep the
economy moving forward by cutting the federal funds target rate twice to a level
of 1.0 percent.

The uncertain economic climate had an effect on the municipal bond market. While
yields on intermediate-and long-term bonds ended the period roughly where they
began, the road between those two points was decidedly bumpy. The 12-month
period can be divided into two distinct market environments. The first, which
lasted from October 2002 to mid-June 2003, saw municipal yields fall by roughly
75 basis points to levels not seen since the late 1960s. Plummeting yields led
to a surge in issuance as municipalities moved to lock in new low financing
rates and, in the case of older bonds, low refinancing costs. Record levels of
supply met with strong demand by investors in search of tax-exempt income to
offset low money market rates. Also, the relatively attractive yield of
municipal bonds versus Treasuries created demand from institutional taxable
investors who "crossed-over" to purchase municipals.

The municipal market reversed abruptly in mid-June, when yields began to climb
from their lows and investors shifted their attention to the improving equity
market. Participation from cross-over investors also evaporated as taxable
yields rose faster than those of tax-exempts. Issuance remained strong through
July, but declined over the last three months as yields rose. These forces
combined to push municipal-bond yields above their historic lows, ending the
fiscal year near where they began.

California faced a host of economic and fiscal problems during the year,
including a multi-billion dollar budget deficit that led Moody's and Standard &
Poor's to downgrade the state's general obligations in February. California
issuers sold approximately $51 billion in debt during the first 10 months of
2003, an increase of 35 percent compared to the same period in 2002. Because of
fiscal and credit concerns, valuations of the state's general obligation bonds
declined during the period.

PERFORMANCE ANALYSIS

The net asset value (NAV) of Morgan Stanley Insured California Municipal
Securities (ICS) decreased from $15.56 to $15.24 per share for the fiscal year
ended October 31, 2003. Based on this change plus reinvestment of tax-free
dividends totaling $0.685 per share, a short-term capital gain distribution of
$0.041 per share and a long-term capital gain distribution of $0.231 per share,
the Trust's total NAV return was

2


4.79 percent. ICS's value on the New York Stock Exchange (NYSE) decreased from
$14.15 to $13.83 per share during the same period. Based on this change plus
reinvestment of tax-free dividends, the Trust's total market return was 4.57
percent. On October 31, 2003, ICS's NYSE market price was at a 9.20 percent
discount to its NAV. Past performance is no guarantee of future results.

Monthly dividends for the fourth quarter of 2003 were declared in September.
Beginning with the October payment the monthly payment decreased from $0.0575 to
$0.0525 per share. The new dividend reflects the level of the Trust's
undistributed net investment income and projected earnings power. The Trust's
level of undistributed net investment income was $0.112 per share on October 31,
2003 versus $0.128 per share as of October 31, 2002.

From a strategic point of view, with interest rates at multi-decade lows, we
also became increasingly concerned that the next significant shift in interest
rates might be upward. As a result, we began to establish a hedge position by
selling Treasury futures to reduce the portfolio's duration (a measure of
interest rate sensitivity). This allowed us to maintain an average maturity
target range of 20 years in order to take advantage of the steepness of the
municipal yield curve. Nevertheless, market yields on new investments were lower
than the book yields on portfolio holdings called for redemption. The
portfolio's duration was 8.1 years. We continued to emphasize revenue bonds in
sectors tied to reliable income streams from essential services such as
municipal electric, transportation and water and sewer. As of October 31, 2003,
the Trust's net assets of $58 million were diversified across 33 credits in 11
long-term sectors.

The Trust's procedure for reinvesting all dividends and distributions in common
shares is through purchases in the open market. This method helps support the
market value of the Trust's shares. In addition, we would like to remind you
that the Trustees have approved a procedure whereby the Trust may, when
appropriate, purchase shares in the open market or in privately negotiated
transactions at a price not above market value or net asset value, whichever is
lower at the time of purchase. During the 12-month period ended October 31,
2003, the Trust purchased and retired 111,400 shares of common stock at a
weighted average market discount of 8.44 percent.

                                                                               3




   LARGEST SECTORS
                                                 
   Water & Sewer                                       20.5%
   General Obligation                                  18.2%
   Tax Allocation                                      16.7%
   Electric                                            11.9%
   Mortgage                                             9.9%




   CREDIT ENHANCEMENTS
                                                 
   AMBAC                                               32.9%
   FGIC                                                22.5%
   FSA                                                 23.7%
   MBIA                                                16.2%
   Connie Lee                                           2.8%
   US Gov't Backed                                      1.9%


Subject to change daily. Largest sector percentages and credit enhancements are
as a percentage of total long-term investments. Provided for informational
purposes only and should not be deemed as a recommendation to buy or sell the
securities mentioned. Morgan Stanley is a full-service firm engaged in
securities trading and brokerage activities, investment banking, research and
analysis, financing and financial advisory services.

RESULTS OF ANNUAL SHAREHOLDER MEETING

ON JUNE 17, 2003, AN ANNUAL MEETING OF THE TRUST'S SHAREHOLDERS WAS HELD FOR THE
PURPOSE OF VOTING ON THE FOLLOWING MATTER, THE RESULTS OF WHICH WERE AS FOLLOWS:

(1) ELECTION OF TRUSTEES:


                                      
--------------------------------------------------
WAYNE E. HEDIEN
FOR                                      3,060,998
WITHHELD                                    37,001
--------------------------------------------------
DR. MANUEL H. JOHNSON
FOR                                      3,063,404
WITHHELD                                    34,595
--------------------------------------------------


THE FOLLOWING TRUSTEES WERE NOT STANDING FOR REELECTION AT THIS MEETING: MICHAEL
BOZIC, CHARLES A. FIUMEFREDDO, EDWIN J. GARN, JAMES F. HIGGINS, MICHAEL E.
NUGENT AND PHILIP J. PURCELL.

AS OF JULY 31, 2003, THE FOLLOWING ARE NOW SERVING AS TRUSTEES: JOSEPH J. KEARNS
AND FERGUS REID.

4


DISTRIBUTION BY MATURITY
(% of Long Term Portfolio)

                                  [BAR GRAPH]

WEIGHTED AVERAGE MATURITY: 20 YEARS


                                                           
1-5                                                                               0.00
5-10                                                                              5.00
10-20                                                                            50.00
20-30                                                                            45.00
30+                                                                               0.00


Portfolio structure is subject to change.

                                                                               5


CALL AND COST (BOOK) YIELD STRUCTURE
                                  [BAR GRAPH]

PERCENT OF BONDS CALLABLE -- WEIGHTED AVERAGE CALL PROTECTION: 6 YEARS

(Based on Long-Term Portfolio) As of 10/31/03


                                                           
2003(a)                                                                           5.00
2004                                                                             28.00
2005                                                                              1.00
2006                                                                              0.00
2007                                                                              0.00
2008                                                                              0.00
2009                                                                              4.00
2010                                                                              2.00
2011                                                                             18.00
2012                                                                             16.00
2013+                                                                            26.00


                                  [BAR GRAPH]
COST (BOOK) YIELD(b) -- WEIGHTED AVERAGE BOOK YIELD: 5.5%

(Based on Long-Term Portfolio) As of 10/31/03


                                                           
2003(a)                                                                          6.00
2004                                                                             6.30
2005                                                                             6.20
2006                                                                             0.00
2007                                                                             0.00
2008                                                                             0.00
2009                                                                             5.90
2010                                                                             5.60
2011                                                                             5.20
2012                                                                             4.90
2013+                                                                            4.90


(a)  May include issues callable in previous years.
(b)  Cost or "book" yield is the annual income earned on a portfolio investment
     based on its original purchase price before the Trust's operating expenses.
     For example, the Trust is earning a book yield of 6.0% on 5% of the
     long-term portfolio that is callable in 2003. Portfolio structure is
     subject to change.

6


Morgan Stanley Insured California Municipal Securities
PORTFOLIO OF INVESTMENTS - OCTOBER 31, 2003



PRINCIPAL
AMOUNT IN                                                                COUPON   MATURITY
THOUSANDS                                                                 RATE      DATE        VALUE
---------------------------------------------------------------------------------------------------------
                                                                                 
            California Tax-Exempt Municipal Bonds (98.2%)
            General Obligation (17.8%)
 $ 3,000    California, Various Purpose Dtd 03/01/94 (FSA).............  5.50 %   03/01/20   $ 3,098,640
   2,000    Los Angeles Community College District, Election 2001 Ser A
              (MBIA)...................................................  5.00+    06/01/26     2,017,760
   1,000    Los Angeles Unified School District, 2003 Ser A (MBIA).....  5.00     01/01/28     1,009,090
            San Diego Unified School District,
   1,000      2002 Ser D (FGIC)........................................  5.25     07/01/24     1,045,400
   1,000      2003 Ser E (FSA).........................................  5.00     07/01/28     1,009,090
   1,000    Tahoe Truckee Unified School District, District No. 1 2001
              Refg (MBIA)..............................................  5.50     08/01/18     1,132,340
   1,000    Upland School District, Election of 2000 Ser 2001 B
              (FSA)....................................................  5.125    08/01/25     1,024,210
---------                                                                                    -----------

 10,000                                                                                       10,336,530

---------                                                                                    -----------

            Educational Facilities Revenue (6.2%)
   1,500    California Educational Facilities Authority, National
              University Ser 1994 (Connie Lee).........................  6.20     05/01/21     1,566,165
            University of California,
   1,000      Ser 2003 B (Ambac) (WI)..................................  5.00     05/15/21     1,034,490
   1,000      Ser 2003 A (Ambac).......................................  5.00     05/15/33     1,005,250
                                                                                             -----------
 -------
                                                                                               3,605,905
   3,500
                                                                                             -----------
 -------
            Electric Revenue (11.7%)
   1,000    Anaheim Public Financing Authority, Generation Refg Ser
              2002-B (FSA).............................................  5.25     10/01/18     1,077,390
   1,400    California Department of Water Resources, Power Supply Ser
              2002 A (Ambac)...........................................  5.375    05/01/18     1,518,048
            Los Angeles Department of Water & Power,
   1,000      2001 Ser A (FSA).........................................  5.25     07/01/21     1,055,580
   1,000      2003 Ser A (MBIA)........................................  5.00     07/01/22     1,027,720
   1,000    Modesto Irrigation District Capital Improvements, Ser 2001
              A COPs (FSA).............................................  5.00     07/01/31     1,004,590
   1,000    Southern California Public Power Authority, Transmission
              Refg Ser 2002 A (FSA)....................................  5.25     07/01/18     1,075,560
                                                                                             -----------
 -------
                                                                                               6,758,888
   6,400
                                                                                             -----------
 -------
            Mortgage Revenue - Multi-Family (5.1%)
            Los Angeles Community Redevelopment Agency, 1994 Ser A
   2,840      (Ambac)..................................................  6.45     07/01/17     2,954,679
 -------                                                                                     -----------



                                                                               7
                       See Notes to Financial Statements


Morgan Stanley Insured California Municipal Securities
PORTFOLIO OF INVESTMENTS - OCTOBER 31, 2003 continued



PRINCIPAL
AMOUNT IN                                                                COUPON   MATURITY
THOUSANDS                                                                 RATE      DATE        VALUE
---------------------------------------------------------------------------------------------------------
                                                                                 
            Mortgage Revenue - Single Family (4.6%)
 $ 2,000    California Department of Veterans Affairs, Home Purchase
              2002 Ser A (Ambac).......................................  5.35 %   12/01/27   $ 2,058,520
     575    California Housing Financing Agency, 1995 Ser B (AMT)
              (Ambac)..................................................  6.25     08/01/14       605,090
 --------                                                                                    -----------

   2,575                                                                                       2,663,610

  -------                                                                                    -----------

            Public Facilities Revenue (1.8%)
            Glendale Unified School District, 1994 Ser A COPs
   1,000    (Ambac)..................................................  6.00       03/01/19     1,035,400
  -------                                                                                    -----------

            Resource Recovery Revenue (3.8%)
            Sacramento Financing Authority, 1999 Solid Waste &
   2,000      Redevelopment (Ambac)....................................  5.75     12/01/22     2,211,740
  -------                                                                                    -----------
            Tax Allocation Revenue (16.4%)
   2,000    Bay Area Government Association, Pool 1994 Ser A (FSA).....  6.00     12/15/24     2,142,120
   1,000    Burbank Public Financing Authority, Golden State
              Redevelopment 2003 Ser A (Ambac).........................  5.25     12/01/14     1,115,160
   3,000    Corona Redevelopment Agency, Area A 1994 Refg Ser A
              (FGIC)...................................................  6.25     09/01/13     3,183,270
   1,000    Long Beach Bond Finance Authority, Downtown, North Long
              Beach, Poly High and West Beach Project Areas 2002 Ser A
              (Ambac)..................................................  5.375    08/01/21     1,063,380
   2,000    Poway Redevelopment Agency, Paguay Redevelopment Project
              Ser 2003 A (MBIA)........................................  5.00     06/15/28     2,015,080
 -------                                                                                     -----------

   9,000                                                                                       9,519,010

 -------                                                                                     -----------

            Transportation Facilities Revenue (5.2%)
   2,000    California Infrastructure & Economic Development Bank, Bay
              Area Toll Bridges Seismic Retrofit First Lien Ser 2003 A
              (FGIC)...................................................  5.00     07/01/29     2,016,660
   1,000    San Jose, Airport Ser 2001 A (FGIC)........................  5.00     03/01/25     1,009,710
 -------                                                                                     -----------

   3,000                                                                                       3,026,370

 -------                                                                                     -----------

            Water & Sewer Revenue (20.1%)
   1,500    California Department of Water Resources, Central Valley
              Ser Y (FGIC).............................................  5.25     12/01/19     1,612,125
   2,000    East Bay Municipal Utility District, Water Ser 2001
              (MBIA)...................................................  5.00     06/01/26     2,017,500
   2,900    Garden Grove Public Finance Authority, Water Ser Capital
              Improvements 1993 (FGIC).................................  5.50     12/15/23     2,972,036
   1,000    Metropolitan Waterworks District of Southern California
              2003 Ser B-2 (FGIC)......................................  5.00     10/01/27     1,010,090
   2,000    Sacramento Financing Authority, Water & Capital Improvement
              2001 Ser A (Ambac).......................................  5.00     12/01/26     2,017,500
   2,000    San Francisco Public Utilities Commission, Water Refg Ser A
              2001 (FSA)...............................................  5.00     11/01/31     2,011,800
 -------                                                                                     -----------

  11,400                                                                                      11,641,051

 -------                                                                                     -----------


8
                       See Notes to Financial Statements


Morgan Stanley Insured California Municipal Securities
PORTFOLIO OF INVESTMENTS - OCTOBER 31, 2003 continued



PRINCIPAL
AMOUNT IN                                                                COUPON   MATURITY
THOUSANDS                                                                 RATE      DATE        VALUE
---------------------------------------------------------------------------------------------------------
                                                                                 
            Refunded (5.5%)
 $ 2,000    Anaheim, Anaheim Memorial Hospital Association COPs (Ambac)
              (ETM)....................................................  5.125%   05/15/20   $ 2,072,780
   1,000    Puerto Rico Infrastructure Financing Authority, 2000 Ser A
              (ETM)....................................................  5.50     10/01/32     1,080,420
 -------                                                                                     -----------

   3,000                                                                                       3,153,200

 -------                                                                                     -----------
  54,715    Total California Tax-Exempt Municipal Bonds (Cost $54,059,154)................    56,906,383

 -------                                                                                     -----------
            California Short Term Tax-Exempt Municipal Obligations (2.0%)
     800    Los Angeles Department of Water & Power, 2001 Ser B
              (Demand 11/01/03)........................................  1.12*    07/01/34       800,000
     360    Newport Beach, Hoag Memorial/Presbyterian Hospital Ser 1992
              (Demand 11/01/03)........................................  1.15*    10/01/22       360,000
 -------                                                                                     -----------
   1,160    Total California Short-Term Tax-Exempt Municipal Obligations (Cost
 -------    $1,160,000)...................................................................     1,160,000
                                                                                             -----------



                                                                                   
 $55,875    Total Investments (Cost $55,219,154) (a)(b)........................   100.2%     58,066,383
 =======
            Liabilities in Excess of Other Assets..............................    (0.2)       (143,847)
                                                                                  -----     -----------
            Net Assets Applicable to Common Shareholders.......................   100.0%    $57,922,536
                                                                                  =====     ===========


---------------------


         
   AMT      Alternative Minimum Tax.
   COPs     Certificates of Participation.
   ETM      Escrowed to maturity.
    WI      Security purchased on a "when-issued" basis.
    *       Current coupon of variable rate demand obligation.
    +       A portion of this security has been physically segregated in
            connection with open futures contracts.
   (a)      Securities have been designated as collateral in an amount
            equal to $2,147,750 in connection with open futures
            contracts and the purchase of "when-issued" securities.
   (b)      The aggregate cost for federal income tax purposes is
            $55,115,511. The aggregate gross unrealized appreciation is
            $2,984,640 and the aggregate gross unrealized depreciation
            is $33,768, resulting in net unrealized appreciation of
            $2,950,872.

Bond Insurance:
---------------
  Ambac     Ambac Assurance Corporation.
Connie Lee  Connie Lee Insurance Company - A wholly owned subsidiary of
            Ambac Assurance Corporation.
   FGIC     Financial Guaranty Insurance Company.
   FSA      Financial Security Assurance Inc.
   MBIA     Municipal Bond Investors Assurance Corporation.


Futures Contracts Open at October 31, 2003:



NUMBER OF                   DESCRIPTION/DELIVERY          UNDERLYING FACE          UNREALIZED
CONTRACTS   LONG/SHORT         MONTH AND YEAR             AMOUNT AT VALUE         APPRECIATION
---------   ----------   --------------------------   ------------------------   --------------
                                                                     
   10          Short     U.S. Treasury Notes 5 Year         $(1,118,125)              $597
                               December/2003


                                                                               9
                       See Notes to Financial Statements


Morgan Stanley Insured California Municipal Securities
FINANCIAL STATEMENTS

Statement of Assets and Liabilities
October 31, 2003


                                    
Assets:
Investments in securities, at value
  (cost $55,219,154).................  $58,066,383
Cash.................................       49,010
Interest receivable..................      907,146
Prepaid expenses.....................        3,524
                                       -----------
    Total Assets.....................   59,026,063
                                       -----------
Liabilities:
Payable for:
    Investment purchased.............    1,029,000
    Investment management fee........       19,432
    Common shares of beneficial
      interest repurchased...........        8,340
    Variation margin.................        1,719
Accrued expenses.....................       45,036
                                       -----------
    Total Liabilities................    1,103,527
                                       -----------

Preferred shares of beneficial
  interest (1,000,000 shares
  authorized of
  non-participating $.01 par value,
  none issued).......................      --
                                       -----------
    Net Assets Applicable to Common
      Shareholders...................  $57,922,536
                                       ===========
Composition of Net Assets Applicable
to Common Shareholders:
Common shares of beneficial interest
  (unlimited shares authorized
  of $.01 par value, 3,799,913 shares
  outstanding).......................  $53,896,529
Net unrealized appreciation..........    2,847,826
Accumulated undistributed net
  investment income..................      424,048
Accumulated undistributed net
  realized gain......................      754,133
                                       -----------
    Net Assets Applicable to Common
      Shareholders...................  $57,922,536
                                       ===========
Net Assets Value Per Common Share,
($57,922,536 divided by 3,799,913
common shares outstanding)...........       $15.24
                                       ===========


Statement of Operations
For the year ended October 31, 2003


                                    
Net Investment Income:
Interest Income......................  $ 2,999,507
                                       -----------
Expenses
Investment management fee............      208,136
Professional fees....................       48,170
Shareholder reports and notices......       20,776
Transfer agent fees and expenses.....       18,833
Registration fees....................       13,403
Trustees' fees and expenses..........        8,017
Custodian fees.......................        5,573
Other................................        6,740
                                       -----------
    Total Expenses...................      329,648

Less: expense offset.................       (5,564)
                                       -----------
    Net Expenses.....................      324,084
                                       -----------
    Net Investment Income............    2,675,423
                                       -----------
Net Realized and Unrealized Gain
(Loss):
Net Realized Gain....................      737,514
Net Change in Unrealized
  Appreciation.......................   (1,077,676)
                                       -----------
    Net Loss.........................     (340,162)
                                       -----------
Net Increase.........................  $ 2,335,261
                                       ===========


10
                       See Notes to Financial Statements


Morgan Stanley Insured California Municipal Securities
FINANCIAL STATEMENTS continued

Statement of Changes in Net Assets



                                                                FOR THE YEAR       FOR THE YEAR
                                                                   ENDED              ENDED
                                                              OCTOBER 31, 2003   OCTOBER 31, 2002
                                                              ----------------   ----------------
                                                                           
Increase (Decrease) in Net Assets:
Operations:
Net investment income.......................................    $ 2,675,423        $ 2,849,517
Net realized gain...........................................        737,514          1,023,964
Net change in unrealized appreciation.......................     (1,077,676)        (1,235,447)
                                                                -----------        -----------
    Net Increase............................................      2,335,261          2,638,034
                                                                -----------        -----------
Dividends and Distributions to Common Shareholders from:
Net investment income.......................................     (2,736,792)        (2,963,583)
Net realized gain...........................................       (974,718)        (1,459,019)
                                                                -----------        -----------
    Total Dividends and Distributions.......................     (3,711,510)        (4,422,602)
                                                                -----------        -----------

Decrease from transactions in common shares of beneficial
  interest..................................................     (1,563,653)          (503,028)
                                                                -----------        -----------
    Net Decrease............................................     (2,939,902)        (2,287,596)
Net Assets Applicable to Common Shareholders:
Beginning of period.........................................     60,862,438         63,150,034
                                                                -----------        -----------
End of Period
(Including accumulated undistributed net investment income
of $424,048 and $502,037, respectively).....................    $57,922,536        $60,862,438
                                                                ===========        ===========


                                                                              11
                       See Notes to Financial Statements


Morgan Stanley Insured California Municipal Securities
NOTES TO FINANCIAL STATEMENTS - OCTOBER 31, 2003

1. Organization and Accounting Policies

Morgan Stanley Insured California Municipal Securities (the "Trust") is
registered under the Investment Company Act of 1940, as amended, as a
diversified, closed-end management investment company. The Trust's investment
objective is to provide current income which is exempt from both federal and
California income taxes. The Trust was organized as a Massachusetts business
trust on October 14, 1993 and commenced operations on February 28, 1994.

The following is a summary of significant accounting policies:

A. Valuation of Investments -- (1) portfolio securities are valued by an outside
independent pricing service approved by the Trustees. The pricing service uses
both a computerized grid matrix of tax-exempt securities and evaluations by its
staff, in each case based on information concerning market transactions and
quotations from dealers which reflect the bid side of the market each day. The
portfolio securities are thus valued by reference to a combination of
transactions and quotations for the same or other securities believed to be
comparable in quality, coupon, maturity, type of issue, call provisions, trading
characteristics and other features deemed to be relevant; (2) futures are valued
at the latest sale price on the commodities exchange on which they trade unless
it is determined that such price does not reflect their market value, in which
case they will be valued at their fair value as determined in good faith under
procedures established by and under the supervision of the Trustees; and (3)
short-term debt securities having a maturity date of more than sixty days at
time of purchase are valued on a mark-to-market basis until sixty days prior to
maturity and thereafter at amortized cost based on their value on the 61st day.
Short-term debt securities having a maturity date of sixty days or less at the
time of purchase are valued at amortized cost.

B. Accounting for Investments -- Security transactions are accounted for on the
trade date (date the order to buy or sell is executed). Realized gains and
losses on security transactions are determined by the identified cost method.
Discounts are accreted and premiums are amortized over the life of the
respective securities. Interest income is accrued daily.

C. Futures Contracts -- A futures contract is an agreement between two parties
to buy and sell financial instruments or contracts based on financial indices at
a set price on a future date. Upon entering into such a contract, the Trust is
required to pledge to the broker cash, U.S. Government securities or other
liquid portfolio securities equal to the minimum initial margin requirements of
the applicable futures exchange. Pursuant to the contract, the Trust agrees to
receive from or pay to the broker an amount of cash equal to the daily
fluctuation in the value of the contract. Such receipts or payments known as
variation margin are recorded by the Trust as unrealized gains and losses. Upon

12


Morgan Stanley Insured California Municipal Securities
NOTES TO FINANCIAL STATEMENTS - OCTOBER 31, 2003 continued

closing of the contract, the Trust realizes a gain or loss equal to the
difference between the value of the contract at the time it was opened and the
value at the time it was closed.

D. Federal Income Tax Policy -- It is the Trust's policy to comply with the
requirements of the Internal Revenue Code applicable to regulated investment
companies and to distribute substantially all of its taxable and nontaxable
income to its shareholders. Accordingly, no federal income tax provision is
required.

E. Dividends and Distributions to Shareholders -- Dividends and distributions to
shareholders are recorded on the ex-dividend date.

F. Use of Estimates -- The preparation of financial statements in accordance
with generally accepted accounting principles requires management to make
estimates and assumptions that affect the reported amounts and disclosures.
Actual results could differ from those estimates.

2. Investment Management Agreement

Pursuant to an Investment Management Agreement with Morgan Stanley Investment
Advisors Inc. (the "Investment Manager"), the Trust pays the Investment Manager
a management fee, calculated weekly and payable monthly, by applying the annual
rate of 0.35% to the Trust's weekly net assets.

3. Security Transactions and Transactions with Affiliates

The cost of purchases and proceeds from sales of portfolio securities, excluding
short-term investments, for the year ended October 31, 2003 aggregated
$17,939,753 and $20,115,194, respectively. Included in the aforementioned are
sales of $1,013,650 with other Morgan Stanley funds including a net realized
gain of $32,901.

Morgan Stanley Trust, an affiliate of the Investment Manager, is the Trust's
transfer agent. At October 31, 2003, the Trust had transfer agent fees and
expenses payable of approximately $1,200.

4. Preferred Shares of Beneficial Interest

The Trust is authorized to issue up to 1,000,000 non-participating preferred
shares of beneficial interest having a par value of $.01 per share, in one or
more series, with rights as determined by the Trustees, without approval of the
common shareholders. The preferred shares have a liquidation value of $50,000
per share plus the redemption premium, if any, plus accumulated but unpaid
dividends, whether or not declared, thereon to the date of distribution. The
Trust may redeem such shares, in whole or in part, at the original purchase
price of $50,000 per share plus accumulated but unpaid dividends, whether or not
declared, thereon to the date of redemption.

                                                                              13


Morgan Stanley Insured California Municipal Securities
NOTES TO FINANCIAL STATEMENTS - OCTOBER 31, 2003 continued

Upon issuance, the Trust will be subject to certain restrictions relating to the
preferred shares. Failure to comply with these restrictions could preclude the
Trust from declaring any distributions to common shareholders or purchasing
common shares and/or could trigger the mandatory redemption of preferred shares
at liquidation value.

The preferred shares, entitled to one vote per share, generally vote with the
common shares but vote separately as a class to elect two Trustees and on any
matters affecting the rights of the preferred shares.

As of October 31, 2003, there were no preferred shares outstanding.

5. Common Shares of Beneficial Interest

Transactions in common shares of beneficial interest were as follows:



                                                                                        CAPITAL
                                                                                        PAID IN
                                                                                       EXCESS OF
                                                               SHARES     PAR VALUE    PAR VALUE
                                                              ---------   ---------   -----------
                                                                             
Balance, October 31, 2001...................................  3,946,013    $39,460    $55,923,535
Treasury shares purchased and retired (weighted average
  discount 6.18%)*..........................................    (34,700)      (347)      (502,681)
Reclassification due to permanent book/tax differences......     --          --               215
                                                              ---------    -------    -----------
Balance, October 31, 2002...................................  3,911,313     39,113     55,421,069
Treasury shares purchased and retired (weighted average
  discount 8.44%)*..........................................   (111,400)    (1,114)    (1,562,539)
                                                              ---------    -------    -----------
Balance, October 31, 2003...................................  3,799,913    $37,999    $53,858,530
                                                              =========    =======    ===========


---------------------
   * The Trustees have voted to retire the shares purchased.

6. Dividends To Common Shareholders

On September 23, 2003, the Trust declared the following dividends from net
investment income:



 AMOUNT         RECORD            PAYABLE
PER SHARE        DATE              DATE
---------  ----------------  -----------------
                       
 $0.0525   November 7, 2003  November 21, 2003
 $0.0525   December 5, 2003  December 19, 2003


7. Expense Offset

The expense offset represents a reduction of the custodian fees for earnings on
cash balances maintained by the Trust.

14


Morgan Stanley Insured California Municipal Securities
NOTES TO FINANCIAL STATEMENTS - OCTOBER 31, 2003 continued

8. Risks Relating to Certain Financial Instruments

The Trust may invest a portion of its assets in residual interest bonds, which
are inverse floating rate municipal obligations. The prices of these securities
are subject to greater market fluctuations during periods of changing prevailing
interest rates than are comparable fixed rate obligations.

At October 31, 2003, the Trust did not hold positions in residual interest
bonds.

To hedge against adverse interest rate changes, the Trust may invest in
financial futures contracts or municipal bond index futures contracts ("futures
contracts").

These futures contracts involve elements of market risk in excess of the amount
reflected in the Statement of Assets and Liabilities. The Trust bears the risk
of an unfavorable change in the value of the underlying securities.

At October 31, 2003, the Trust had outstanding futures contracts.

9. Federal Income Tax Status

The amount of dividends and distributions from net investment income and net
realized capital gains are determined in accordance with federal income tax
regulations which may differ from generally accepted accounting principles.
These "book/tax" differences are either considered temporary or permanent in
nature. To the extent these differences are permanent in nature, such amounts
are reclassified within the capital accounts based on their federal tax-basis
treatment; temporary differences do not require reclassification. Dividends and
distributions which exceed net investment income and net realized capital gains
for tax purposes are reported as distributions of paid-in-capital.

The tax character of distributions paid was as follows:



                                                          FOR THE YEAR       FOR THE YEAR
                                                             ENDED              ENDED
                                                        OCTOBER 31, 2003   OCTOBER 31, 2002
                                                        ----------------   ----------------
                                                                     
Tax-exempt income.....................................     $2,649,458         $2,824,666
Ordinary income.......................................        160,235            138,917
Long-term capital gains...............................        901,817          1,459,019
                                                           ----------         ----------
Total distributions...................................     $3,711,510         $4,422,602
                                                           ==========         ==========


                                                                              15


Morgan Stanley Insured California Municipal Securities
NOTES TO FINANCIAL STATEMENTS - OCTOBER 31, 2003 continued

As of October 31, 2003, the tax-basis components of accumulated earnings were as
follows:


                                                           
Undistributed tax-exempt income.............................  $  306,010
Undistributed ordinary income...............................      14,394
Undistributed long-term gains...............................     754,731
                                                              ----------
Net accumulated earnings....................................   1,075,135
Net unrealized appreciation.................................   2,950,872
                                                              ----------
Total accumulated earnings..................................  $4,026,007
                                                              ==========


As of October 31, 2003, the Trust had temporary book/tax differences
attributable to book amortization of discounts on debt securities and
mark-to-market of open futures contracts and permanent book/tax differences
attributable to tax adjustments on debt securities sold by the Trust. To reflect
reclassifications arising from the permanent differences, accumulated
undistributed net investment income was charged and accumulated undistributed
net realized gain was credited $16,620.

16


Morgan Stanley Insured California Municipal Securities
FINANCIAL HIGHLIGHTS

Selected ratios and per share data for a common share of beneficial interest
outstanding throughout each period:



                                                                                FOR THE YEAR ENDED OCTOBER 31,
                                                              ------------------------------------------------------------------
                                                                2003          2002          2001          2000           1999
                                                              --------      --------      --------      ---------      ---------
                                                                                                        

Selected Per Share Data:
Net asset value, beginning of period........................   $15.56        $16.00        $15.24        $ 14.42        $ 16.00
                                                               ------        ------        ------        -------        -------
Income (loss) from investment operations:
    Net investment income*..................................     0.67          0.69          0.78           0.76           0.74
    Net realized and unrealized gain (loss).................    (0.07)        (0.01)         0.71           0.77          (1.43)
                                                               ------        ------        ------        -------        -------
Total income (loss) from investment operations..............     0.60          0.68          1.49           1.53          (0.69)
                                                               ------        ------        ------        -------        -------
Less dividends and distributions from:
    Net investment income...................................    (0.71)        (0.72)        (0.75)         (0.75)         (0.75)
    Net realized gain.......................................    (0.25)        (0.41)        --             --             (0.16)
                                                               ------        ------        ------        -------        -------
Total dividends and distributions...........................    (0.96)        (1.13)        (0.75)         (0.75)         (0.91)
                                                               ------        ------        ------        -------        -------
Anti-dilutive effect of acquiring treasury shares*..........     0.04          0.01          0.02           0.04           0.02
                                                               ------        ------        ------        -------        -------
Net asset value, end of period..............................   $15.24        $15.56        $16.00        $ 15.24        $ 14.42
                                                               ======        ======        ======        =======        =======
Market value, end of period.................................   $13.83        $14.15        $15.29        $13.375        $12.938
                                                               ======        ======        ======        =======        =======
Total Return+...............................................     4.57%        (0.14)%       20.34%          9.34%         (9.83)%
Ratios to Average Net Assets:
Total expenses (before expense offset)......................     0.55%(1)      0.55%(1)      0.57%(1)       0.56%(1)       0.58%(1)
Net investment income.......................................     4.50%         4.68%         5.01%          5.18%          4.80%
Supplemental Data:
Net assets, end of period, in thousands.....................  $57,923       $60,862       $63,150        $61,360        $59,774
Portfolio turnover rate.....................................       31%           19%           22%            14%             9%


---------------------


      
     *   The per share amounts were computed using an average number
         of shares outstanding during the period.
     +   Total return is based upon the current market value on the
         last day of each period reported. Dividends and
         distributions are assumed to be reinvested at the prices
         obtained under the Trust's dividend reinvestment plan. Total
         return does not reflect brokerage commissions.
    (1)  Does not reflect the effect of expense offset of 0.01%.


                                                                              17
                       See Notes to Financial Statements


Morgan Stanley Insured California Municipal Securities
INDEPENDENT AUDITORS' REPORT

To the Shareholders and Board of Trustees of
Morgan Stanley Insured California Municipal Securities:

We have audited the accompanying statement of assets and liabilities of Morgan
Stanley Insured California Municipal Securities (the "Trust"), including the
portfolio of investments, as of October 31, 2003, and the related statements of
operations for the year then ended and changes in net assets for each of the two
years in the period then ended, and the financial highlights for each of the
five years in the period then ended. These financial statements and financial
highlights are the responsibility of the Trust's management. Our responsibility
is to express an opinion on these financial statements and financial highlights
based on our audits.

We conducted our audits in accordance with auditing standards generally accepted
in the United States of America. Those standards require that we plan and
perform the audit to obtain reasonable assurance about whether the financial
statements and financial highlights are free of material misstatement. An audit
includes examining, on a test basis, evidence supporting the amounts and
disclosures in the financial statements. Our procedures included confirmation of
securities owned as of October 31, 2003, by correspondence with the custodian
and broker. An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation. We believe that our audits provide a
reasonable basis for our opinion.

In our opinion, the financial statements and financial highlights referred to
above present fairly, in all material respects, the financial position of Morgan
Stanley Insured California Municipal Securities as of October 31, 2003, the
results of its operations for the year then ended, the changes in its net assets
for each of the two years in the period then ended, and the financial highlights
for each of the five years in the period then ended, in conformity with
accounting principles generally accepted in the United States of America.

Deloitte & Touche LLP
New York, New York
December 15, 2003

                      2003 FEDERAL TAX NOTICE (UNAUDITED)

         During the year ended October 31, 2003, the Trust paid to its
         shareholders $0.71 per share from tax-exempt income.

         For the year ended October 31, 2003, the Trust paid to its
         shareholders $0.23 per share from long-term capital gains.

18


Morgan Stanley Insured California Municipal Securities
TRUSTEE AND OFFICER INFORMATION

Independent Trustees:


                                                                                                      Number of
                                                                                                    Portfolios in
                                       Position(s)  Term of Office                                  Fund Complex
      Name, Age and Address of          Held with   and Length of   Principal Occupation(s) During   Overseen by
         Independent Trustee           Registrant    Time Served*           Past 5 Years**           Trustee***
-------------------------------------  -----------  --------------  ------------------------------  -------------
                                                                                        
Michael Bozic (62)                     Trustee      Since April     Retired; Director or Trustee         211
c/o Mayer, Brown, Rowe & Maw LLP                    1994            of the Retail Funds and TCW/DW
Counsel to the Independent Directors                                Term Trust 2003 (since April
1675 Broadway                                                       1994) and the Institutional
New York, NY                                                        Funds (since July 2003);
                                                                    formerly Vice Chairman of
                                                                    Kmart Corporation (December
                                                                    1998-October 2000), Chairman
                                                                    and Chief Executive Officer of
                                                                    Levitz Furniture Corporation
                                                                    (November 1995-November 1998)
                                                                    and President and Chief
                                                                    Executive Officer of Hills
                                                                    Department Stores (May 1991-
                                                                    July 1995); formerly variously
                                                                    Chairman, Chief Executive
                                                                    Officer, President and Chief
                                                                    Operating Officer (1987-1991)
                                                                    of the Sears Merchandise Group
                                                                    of Sears, Roebuck & Co.

Edwin J. Garn (71)                     Trustee      Since January   Director or Trustee of the           211
c/o Summit Ventures LLC                             1993            Retail Funds and TCW/DW Term
1 Utah Center                                                       Trust 2003 (since January
201 S. Main Street                                                  1993) and the Institutional
Salt Lake City, UT                                                  Funds (since July 2003);
                                                                    member of the Utah Regional
                                                                    Advisory Board of Pacific
                                                                    Corp.; formerly United States
                                                                    Senator (R-Utah) (1974-1992)
                                                                    and Chairman, Senate Banking
                                                                    Committee (1980-1986), Mayor
                                                                    of Salt Lake City, Utah
                                                                    (1971-1974), Astronaut, Space
                                                                    Shuttle Discovery (April
                                                                    12-19, 1985), and Vice
                                                                    Chairman, Huntsman Corporation
                                                                    (chemical company).

Wayne E. Hedien (69)                   Trustee      Since           Retired; Director or Trustee         211
c/o Mayer, Brown, Rowe & Maw LLP                    September 1997  of the Retail Funds and TCW/DW
Counsel to the Independent Directors                                Term Trust 2003; (Since
1675 Broadway                                                       September 1997) and the
New York, NY                                                        Institutional Funds (since
                                                                    July 2003); formerly
                                                                    associated with the Allstate
                                                                    Companies (1966-1994), most
                                                                    recently as Chairman of The
                                                                    Allstate Corporation (March
                                                                    1993-December 1994) and
                                                                    Chairman and Chief Executive
                                                                    Officer of its wholly-owned
                                                                    subsidiary, Allstate Insurance
                                                                    Company (July 1989-December
                                                                    1994).



      Name, Age and Address of          Other Directorships Held by
         Independent Trustee                      Trustee
-------------------------------------  ------------------------------
                                    
Michael Bozic (62)                     Director of Weirton Steel
c/o Mayer, Brown, Rowe & Maw LLP       Corporation.
Counsel to the Independent Directors
1675 Broadway
New York, NY

Edwin J. Garn (71)                     Director of Franklin Covey
c/o Summit Ventures LLC                (time management systems), BMW
1 Utah Center                          Bank of North America, Inc.
201 S. Main Street                     (industrial loan corporation),
Salt Lake City, UT                     United Space Alliance (joint
                                       venture between Lockheed
                                       Martin and the Boeing Company)
                                       and Nuskin Asia Pacific
                                       (multilevel marketing); member
                                       of the board of various civic
                                       and charitable organizations.

Wayne E. Hedien (69)                   Director of The PMI Group Inc.
c/o Mayer, Brown, Rowe & Maw LLP       (private mortgage insurance);
Counsel to the Independent Directors   Trustee and Vice Chairman of
1675 Broadway                          The Field Museum of Natural
New York, NY                           History; director of various
                                       other business and charitable
                                       organizations.


                                                                              19


Morgan Stanley Insured California Municipal Securities
TRUSTEE AND OFFICER INFORMATION continued


                                                                                                      Number of
                                                                                                    Portfolios in
                                       Position(s)  Term of Office                                  Fund Complex
      Name, Age and Address of          Held with   and Length of   Principal Occupation(s) During   Overseen by
         Independent Trustee           Registrant    Time Served*           Past 5 Years**           Trustee***
-------------------------------------  -----------  --------------  ------------------------------  -------------
                                                                                        
Dr. Manuel H. Johnson (54)             Trustee      Since July      Chairman of the Audit                211
c/o Johnson Smick International, Inc.               1991            Committee and Director or
2099 Pennsylvania Avenue, N.W.                                      Trustee of the Retail Funds
Suite 950                                                           and TCW/DW Term Trust 2003
Washington, D.C.                                                    (since July 1991) and the
                                                                    Institutional Funds (since
                                                                    July 2003); Senior Partner,
                                                                    Johnson Smick International,
                                                                    Inc., a consulting firm;
                                                                    Co-Chairman and a founder of
                                                                    the Group of Seven Council
                                                                    (G7C), an international
                                                                    economic commission; formerly
                                                                    Vice Chairman of the Board of
                                                                    Governors of the Federal
                                                                    Reserve System and Assistant
                                                                    Secretary of the U.S.
                                                                    Treasury.

Joseph J. Kearns (61)                  Trustee      Since July      Deputy Chairman of the Audit         212
PMB754                                              2003            Committee and Director or
23852 Pacific Coast Highway                                         Trustee of the Retail Funds
Malibu, CA                                                          and TCW/DW Term Trust 2003
                                                                    (since July 2003) and the
                                                                    Institutional Funds (since
                                                                    August 1994); previously
                                                                    Chairman of the Audit
                                                                    Committee of the Institutional
                                                                    Funds (October 2001-July
                                                                    2003); President, Kearns &
                                                                    Associates LLC (investment
                                                                    consulting); formerly CFO of
                                                                    the J. Paul Getty Trust.

Michael E. Nugent (67)                 Trustee      Since July      Chairman of the Insurance            211
c/o Triumph Capital, L.P.                           1991            Committee and Director or
445 Park Avenue                                                     Trustee of the Retail Funds
New York, NY                                                        and TCW/DW Term Trust 2003
                                                                    (since July 1991) and the
                                                                    Institutional Funds (since
                                                                    July 2001); General Partner of
                                                                    Triumph Capital, L.P., a
                                                                    private investment
                                                                    partnership; formerly Vice
                                                                    President, Bankers Trust
                                                                    Company and BT Capital
                                                                    Corporation (1984-1988).

Fergus Reid (71)                       Trustee      Since July      Chairman of the Governance           212
85 Charles Colman Blvd.                             2003            Committee and Director or
Pawling, NY                                                         Trustee of the Retail Funds
                                                                    and TCW/DW Term Trust 2003
                                                                    (since July 2003) and the
                                                                    Institutional Funds (since
                                                                    June 1992); Chairman of
                                                                    Lumelite Plastics Corporation.



      Name, Age and Address of          Other Directorships Held by
         Independent Trustee                      Trustee
-------------------------------------  ------------------------------
                                    
Dr. Manuel H. Johnson (54)             Director of NVR, Inc. (home
c/o Johnson Smick International, Inc.  construction); Chairman and
2099 Pennsylvania Avenue, N.W.         Trustee of the Financial
Suite 950                              Accounting Foundation
Washington, D.C.                       (oversight organization of the
                                       Financial Accounting Standards
                                       Board); Director of RBS
                                       Greenwich Capital Holdings
                                       (financial holding company).

Joseph J. Kearns (61)                  Director of Electro Rent
PMB754                                 Corporation (equipment
23852 Pacific Coast Highway            leasing), The Ford Family
Malibu, CA                             Foundation, and the UCLA
                                       Foundation.

Michael E. Nugent (67)                 Director of various business
c/o Triumph Capital, L.P.              organizations.
445 Park Avenue
New York, NY

Fergus Reid (71)                       Trustee and Director of
85 Charles Colman Blvd.                certain investment companies
Pawling, NY                            in the JPMorgan Funds complex
                                       managed by JP Morgan
                                       Investment Management Inc.


20


Morgan Stanley Insured California Municipal Securities
TRUSTEE AND OFFICER INFORMATION

Interested Trustees:


                                                                                                      Number of
                                                                                                    Portfolios in
                                       Position(s)  Term of Office                                  Fund Complex
      Name, Age and Address of          Held with   and Length of   Principal Occupation(s) During   Overseen by
         Interested Trustee            Registrant    Time Served*           Past 5 Years**           Trustee***
-------------------------------------  -----------  --------------  ------------------------------  -------------
                                                                                        

Charles A. Fiumefreddo (70)            Chairman of  Since July      Chairman and Director or             211
c/o Morgan Stanley Trust               the Board    1991            Trustee of the Retail Funds
Harborside Financial Center,           and Trustee                  and TCW/DW Term Trust 2003
Plaza Two,                                                          (since July 1991) and the
Jersey City, NJ                                                     Institutional Funds (since
                                                                    July 2003); formerly Chief
                                                                    Executive Officer of the
                                                                    Retail Funds and the TCW/DW
                                                                    Term Trust 2003 (until
                                                                    September 2002).

James F. Higgins (55)                  Trustee      Since June      Director or Trustee of the           211
c/o Morgan Stanley Trust                            2000            Retail Funds and TCW/DW Term
Harborside Financial Center,                                        Trust 2003 (since June 2000)
Plaza Two,                                                          and the Institutional Funds
Jersey City, NJ                                                     (since July 2003); Senior
                                                                    Advisor of Morgan Stanley
                                                                    (since August 2000); Director
                                                                    of the Distributor and Dean
                                                                    Witter Realty Inc.; previously
                                                                    President and Chief Operating
                                                                    Officer of the Private Client
                                                                    Group of Morgan Stanley (May
                                                                    1999-August 2000), and
                                                                    President and Chief Operating
                                                                    Officer of Individual
                                                                    Securities of Morgan Stanley
                                                                    (February 1997-May 1999).

Philip J. Purcell (60)                 Trustee      Since April     Director or Trustee of the           211
1585 Broadway                                       1994            Retail Funds and TCW/DW Term
New York, NY                                                        Trust 2003 (since April 1994)
                                                                    and the Institutional Funds
                                                                    (since July 2003); Chairman of
                                                                    the Board of Directors and
                                                                    Chief Executive Officer of
                                                                    Morgan Stanley and Morgan
                                                                    Stanley DW Inc.; Director of
                                                                    the Distributor; Chairman of
                                                                    the Board of Directors and
                                                                    Chief Executive Officer of
                                                                    Novus Credit Services Inc.;
                                                                    Director and/or officer of
                                                                    various Morgan Stanley
                                                                    subsidiaries.



      Name, Age and Address of          Other Directorships Held by
         Interested Trustee                       Trustee
-------------------------------------  ------------------------------
                                    
Charles A. Fiumefreddo (70)            None
c/o Morgan Stanley Trust
Harborside Financial Center,
Plaza Two,
Jersey City, NJ

James F. Higgins (55)                  Director of AXA Financial,
c/o Morgan Stanley Trust               Inc. and The Equitable Life
Harborside Financial Center,           Assurance Society of the
Plaza Two,                             United States (financial
Jersey City, NJ                        services).

Philip J. Purcell (60)                 Director of American Airlines,
1585 Broadway                          Inc. and its parent company,
New York, NY                           AMR Corporation.


---------------------

  * This is the earliest date the Trustee began serving the funds advised by
    Morgan Stanley Investment Advisors Inc. (the "Investment Manager") (the
    "Retail Funds").
 ** The dates referenced below indicating commencement of services as
    Director/Trustee for the Retail Funds and the funds advised by Morgan
    Stanley Investment Management Inc., Morgan Stanley Investments LP and Morgan
    Stanley AIP GP LP (the "Institutional Funds") reflect the earliest date the
    Director/Trustee began serving the Retail or Institutional Funds as
    applicable.
*** The Fund Complex includes all open-end and closed-end funds (including all
    of their portfolios) advised by the Investment Manager and any funds that
    have an investment advisor that is an affiliated person of the Investment
    Manager (including but not limited to Morgan Stanley Investment Management
    Inc. and Morgan Stanley Investments LP).

                                                                              21


Morgan Stanley Insured California Municipal Securities
TRUSTEE AND OFFICER INFORMATION continued

Officers:



                                                   Term of
                                 Position(s)      Office and
  Name, Age and Address of        Held with       Length of
      Executive Officer          Registrant      Time Served*          Principal Occupation(s) During Past 5 Years**
-----------------------------  ---------------  --------------  ------------------------------------------------------------
                                                       
Mitchell M. Merin (50)         President        Since May 1999  President and Chief Operating Officer of Morgan Stanley
1221 Avenue of the Americas                                     Investment Management Inc.; President, Director and Chief
New York, NY                                                    Executive Officer of the Investment Manager and Morgan
                                                                Stanley Services; Chairman, Chief Executive Officer and
                                                                Director of the Distributor; Chairman and Director of the
                                                                Transfer Agent; Director of various Morgan Stanley
                                                                subsidiaries; President Morgan Stanley Investments LP (since
                                                                February 2003); President of the Institutional Funds (since
                                                                July 2003) and President of the Retail Funds and TCW/DW Term
                                                                Trust 2003 (since May 1999); Trustee (since July 2003) and
                                                                President (since December 2002) of the Van Kampen Closed-End
                                                                Funds; Trustee (since May 1999) and President (since October
                                                                2002) of the Van Kampen Open-End Funds.

Ronald E. Robison (64)         Executive Vice   Since April     Chief Global Operations Officer and Managing Director of
1221 Avenue of the Americas    President and    2003            Morgan Stanley Investment Management Inc.; Managing Director
New York, NY                   Principal                        of Morgan Stanley & Co. Incorporated; Managing Director of
                               Executive                        Morgan Stanley; Managing Director, Chief Administrative
                               Officer                          Officer and Director of the Investment Manager and Morgan
                                                                Stanley Services; Chief Executive Officer and Director of
                                                                the Transfer Agent; Executive Vice President and Principal
                                                                Executive Officer of the Institutional Funds (since July
                                                                2003); and the TCW/DW Term Trust 2003 (since April 2003);
                                                                previously President of the Institutional Funds (March
                                                                2001-July 2003) and Director of the Institutional Funds
                                                                (March 2001-July 2003).

Barry Fink (48)                Vice President   Since February  General Counsel (since May 2000) and Managing Director
1221 Avenue of the Americas    and General      1997            (since December 2000) of Morgan Stanley Investment
New York, NY                   Counsel                          Management; Managing Director (since December 2000),
                                                                Secretary (since February 1997) and Director (since July
                                                                1998) of the Investment Manager and Morgan Stanley Services;
                                                                Assistant Secretary of Morgan Stanley DW; Chief Legal
                                                                Officer of Morgan Stanley Investments LP (since July 2002);
                                                                Vice President of the Institutional Funds (since July 2003);
                                                                Vice President and Secretary of the Distributor; previously
                                                                Secretary of the Retail Funds (February 1997-July 2003);
                                                                previously Vice President and Assistant General Counsel of
                                                                the Investment Manager and Morgan Stanley Services (February
                                                                1997-December 2001).

Joseph J. McAlinden (60)       Vice President   Since July      Managing Director and Chief Investment Officer of the
1221 Avenue of the Americas                     1995            Investment Manager, Morgan Stanley Investment Management
New York, NY                                                    Inc. and Morgan Stanley Investments LP; Director of the
                                                                Transfer Agent, Chief Investment Officer of the Van Kampen
                                                                Funds; Vice President of the Institutional Funds (since July
                                                                2003) and the Retail Funds (since July 1995).

Stefanie V. Chang (36)         Vice President   Since July      Executive Director of Morgan Stanley & Co. and Morgan
1221 Avenue of the Americas                     2003            Stanley Investment Management Inc. and Vice President of the
New York, NY                                                    Institutional Funds (since December 1997) and the Retail
                                                                Funds (since July 2003); formerly practiced law with the New
                                                                York law firm of Rogers & Wells (now Clifford Chance LLP).

Francis J. Smith (38)          Treasurer and    Treasurer       Executive Director of the Investment Manager and Morgan
c/o Morgan Stanley Trust       Chief Financial  since July      Stanley Services (since December 2001); previously Vice
Harborside Financial Center,   Officer          2003 and Chief  President of the Retail Funds (September 2002- July 2003);
Plaza Two,                                      Financial       previously Vice President of the Investment Manager and
Jersey City, NJ                                 Officer since   Morgan Stanley Services (August 2000-November 2001) and
                                                September 2002  Senior Manager at PricewaterhouseCoopers LLP (January
                                                                1998-August 2000).


22


Morgan Stanley Insured California Municipal Securities
TRUSTEE AND OFFICER INFORMATION continued



                                                   Term of
                                 Position(s)      Office and
  Name, Age and Address of        Held with       Length of
      Executive Officer          Registrant      Time Served*          Principal Occupation(s) During Past 5 Years**
-----------------------------  ---------------  --------------  ------------------------------------------------------------
                                                       
Thomas F. Caloia (57)          Vice President   Since July      Executive Director (since December 2002) and Assistant
c/o Morgan Stanley Trust                        2003            Treasurer of the Investment Manager, the Distributor and
Harborside Financial Center,                                    Morgan Stanley Services; previously Treasurer of the Retail
Plaza Two,                                                      Funds (April 1989-July 2003); formerly First Vice President
Jersey City, NJ                                                 of the Investment Manager, the Distributor and Morgan
                                                                Stanley Services.

Mary E. Mullin (36)            Secretary        Since July      Vice President of Morgan Stanley & Co. Incorporated and
1221 Avenue of the Americas                     2003            Morgan Stanley Investment Management Inc.; Secretary of the
New York, NY                                                    Institutional Funds (since June 1999) and the Retail Funds
                                                                (since July 2003); formerly practiced law with the New York
                                                                law firms of McDermott, Will & Emery and Skadden, Arps,
                                                                Slate, Meagher & Flom LLP.


---------------------

 * This is the earliest date the Officer began serving the Retail Funds. Each
   Officer serves an indefinite term, until his or her successor is elected.
** The dates referenced below indicating commencement of service as an Officer
   for the Retail and Institutional Funds reflect the earliest date the Officer
   began serving the Retail or Institutional Funds as applicable.

                                                                              23


TRUSTEES

Michael Bozic
Charles A. Fiumefreddo
Edwin J. Garn
Wayne E. Hedien
James F. Higgins
Dr. Manuel H. Johnson
Joseph J. Kearns
Michael E. Nugent
Philip J. Purcell
Fergus Reid

OFFICERS

Charles A. Fiumefreddo
Chairman of the Board

Mitchell M. Merin
President

Ronald E. Robison
Executive Vice President and Principal Executive Officer

Barry Fink
Vice President and General Counsel

Joseph J. McAlinden
Vice President

Stefanie V. Chang
Vice President

Francis J. Smith
Treasurer and Chief Financial Officer

Thomas F. Caloia
Vice President

Mary E. Mullin
Secretary

TRANSFER AGENT

Morgan Stanley Trust
Harborside Financial Center, Plaza Two
Jersey City, New Jersey 07311

INDEPENDENT AUDITORS

Deloitte & Touche LLP
Two World Financial Center
New York, New York 10281

INVESTMENT MANAGER

Morgan Stanley Investment Advisors Inc.
1221 Avenue of the Americas
New York, New York 10020

Investments and services offered through Morgan Stanley DW Inc., member SIPC.

(c) 2003 Morgan Stanley

[MORGAN STANLEY LOGO]

MORGAN STANLEY FUNDS

Morgan Stanley
Insured California
Municipal Securities

Annual Report
October 31, 2003

[MORGAN STANLEY LOGO]

38622RPT-00-13045L03-0P-12/03

Item 2. Code of Ethics.

(a) The Trust has adopted a code of ethics (the "Code of Ethics") that applies
to its principal executive officer, principal financial officer, principal
accounting officer or controller, or persons performing similar functions,
regardless of whether these individuals are employed by the Trust or a third
party.

(b) No information need be disclosed pursuant to this paragraph.

(c) Not applicable.

(d) Not applicable.

(e) Not applicable.

(f)

        (1)     The Trust's Code of Ethics is attached hereto as Exhibit A.

        (2)     Not applicable.

        (3)     Not applicable.



Item 3. Audit Committee Financial Expert.

The Trust's Board of Trustees has determined that it has two "audit committee
financial experts" serving on its audit committee, each of whom are
"independent" Trustees: Dr. Manuel H. Johnson and Joseph J. Kearns. Under
applicable securities laws, a person who is determined to be an audit committee
financial expert will not be deemed an "expert" for any purpose, including
without limitation for the purposes of Section 11 of the Securities Act of 1933,
as a result of being designated or identified as an audit committee financial
expert. The designation or identification of a person as an audit committee
financial expert does not impose on such person any duties, obligations, or
liabilities that are greater than the duties, obligations, and liabilities
imposed on such person as a member of the audit committee and Board of Trustees
in the absence of such designation or identification.



Item 4. Principal Accountant Fees and Services

Applicable only for reports covering fiscal years ending on or after December
15, 2003.




Item 5. Audit Committee of Listed Registrants.

Applicable only for reports covering periods ending on or after the earlier of
(i) the first annual shareholder meeting after January 15, 2004 or (ii) October
31, 2004.


Item 6. [Reserved.]


Item 7. Disclosure of Proxy Voting Policies and Procedures for Closed-End
Management Investment Companies.

The Trust invests in exclusively non-voting securities and therefore this item
is not applicable.


Item 8. [Reserved.]


Item 9 - Controls and Procedures

(a) The Trust's principal executive officer and principal financial officer have
concluded that the Trust's disclosure controls and procedures are sufficient to
ensure that information required to be disclosed by the Trust in this Form N-CSR
was recorded, processed, summarized and reported within the time periods
specified in the Securities and Exchange Commission's rules and forms, based
upon such officers' evaluation of these controls and procedures as of a date
within 90 days of the filing date of the report.

        There were no significant changes or corrective actions with regard to
significant deficiencies or material weaknesses in the Trust's internal controls
or in other factors that could significantly affect the Trust's internal
controls subsequent to the date of their evaluation.


(b) There were no changes in the registrant's internal control over financial
reporting that occurred during the registrant's most recent fiscal half-year
(the registrant's second fiscal half-year in the case of an annual report) that
has materially affected, or is reasonably likely to materially affect, the
registrant's internal control over financial reporting.


                                       2



Item 10 Exhibits
(a) The Code of Ethics for Principal Executive and Senior Financial Officers is
attached hereto.

(b) A separate certification for each principal executive officer and principal
financial officer of the registrant are attached hereto as part of EX-99.CERT.


                                       3


                                   SIGNATURES

        Pursuant to the requirements of the Securities Exchange Act of 1934 and
the Investment Company Act of 1940, the registrant has duly caused this report
to be signed on its behalf by the undersigned, thereunto duly authorized.

Morgan Stanley Insured California Municipal Securities

/s/ Ronald E. Robison
Ronald E. Robison
Principal Executive Officer
December 18, 2003

        Pursuant to the requirements of the Securities Exchange Act of 1934 and
the Investment Company Act of 1940, this report has been signed by the following
persons on behalf of the registrant and in the capacities and on the dates
indicated.

/s/ Ronald E. Robison
Ronald E. Robison
Principal Executive Officer
December 18, 2003

/s/ Francis Smith
Francis Smith
Principal Financial Officer
December 18, 2003


                                       4