WHITTAKER CORP
S-3/A, 1998-04-09
MISCELLANEOUS FABRICATED METAL PRODUCTS
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<PAGE>
 
     
  AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON APRIL 9, 1998     
                                                     REGISTRATION NO. 333-03753
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549
 
                               ----------------
                                
                             AMENDMENT NO. 4     
                                      TO
                                   FORM S-3
                            REGISTRATION STATEMENT
                                     UNDER
                          THE SECURITIES ACT OF 1933
 
                               ----------------
 
                             WHITTAKER CORPORATION
            (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 

                DELAWARE                               95-4033076
      (STATE OR OTHER JURISDICTION                   (IRS EMPLOYER
    OF INCORPORATION OR ORGANIZATION)            IDENTIFICATION NUMBER)

 
                          1955 NORTH SURVEYOR AVENUE
                         SIMI VALLEY, CALIFORNIA 93063
                                (805) 526-5700
  (Address, including zip code, and telephone number, including area code, of
                   registrant's principal executive offices)
 
                              LYNNE M.O. BRICKNER
                 VICE PRESIDENT, GENERAL COUNSEL AND SECRETARY
                          1955 NORTH SURVEYOR AVENUE
                         SIMI VALLEY, CALIFORNIA 93063
                                (805) 526-5700
 (Name, address, including zip code, telephone number, including area code, of
                              agent for service)
 
                                   COPY TO:
                           Brian G. Cartwright, Esq.
                               Latham & Watkins
                       633 West Fifth Street--Suite 4000
                         Los Angeles, California 90071
                                (213) 485-1234
 
                               ----------------
 
  APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: From time
to time after this Registration Statement becomes effective.
 
  If the only securities being registered on this form are being offered
pursuant to dividend reinvestment plans, please check the following box. [_]
 
  If any of the securities being registered on this form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or
interest reinvestment plans, check the following box. [X]
 
                               ----------------
 
  THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS
REGISTRATION STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH
SECTION 8(a) OF THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT
SHALL BECOME EFFECTIVE ON SUCH DATE AS THE SECURITIES AND EXCHANGE COMMISSION,
ACTING PURSUANT TO SAID SECTION 8(a), MAY DETERMINE.
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A         +
+REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE   +
+SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR MAY  +
+OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT        +
+BECOMES EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR   +
+THE SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE      +
+SECURITIES IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE    +
+UNLAWFUL PRIOR TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF  +
+ANY SUCH STATE.                                                               +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                             SUBJECT TO COMPLETION
                   
                PRELIMINARY PROSPECTUS, DATED APRIL 9, 1998     
 
PROSPECTUS
APRIL   , 1998
 
                                1,974,333 SHARES
 
                             WHITTAKER CORPORATION
 
                                  COMMON STOCK
                           (PAR VALUE $.01 PER SHARE)
 
                                  -----------
 
  All of the shares of Common Stock, par value $.01 per share ("Common Stock"),
of Whittaker Corporation, a Delaware corporation (the "Company"), offered
hereby (the "Shares") are being offered by a stockholder of the Company (the
"Selling Stockholder") as described more fully herein. The Company will not
receive any of the proceeds from the sale of the Shares offered hereby. See
"Use of Proceeds," "Selling Stockholder" and "Plan of Distribution."
 
  The Common Stock is traded on the New York and Pacific Stock Exchanges under
the symbol "WKR." On April 7, 1998, the last reported sale price of the Common
Stock on the New York Stock Exchange was $14.75 per share.
 
                                  -----------
 
 THESE SECURITIES HAVE NOT BEEN APPROVED  OR DISAPPROVED BY THE SECURITIES  AND
  EXCHANGE  COMMISSION  OR  ANY  STATE  SECURITIES  COMMISSION  NOR  HAS   THE
   SECURITIES AND  EXCHANGE COMMISSION  OR  ANY STATE  SECURITIES  COMMISSION
    PASSED  UPON  THE   ACCURACY  OR  ADEQUACY   OF  THIS  PROSPECTUS.   ANY
     REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
 
  This Prospectus relates to 1,974,333 shares of Common Stock which were
originally issued by the Company to the Selling Stockholder as of April 10,
1996 in a transaction exempt from the requirements of the Securities Act of
1933, as amended. The issuance of the 1,974,333 shares of Common Stock to such
person was made in connection with the Company's acquisition of Xyplex, Inc., a
Massachusetts corporation, from the Selling Stockholder. The Selling
Stockholder, directly, through agents designated from time to time, or through
dealers or underwriters also to be designated, may sell the Shares from time to
time on terms to be determined at the time of sale. To the extent required, the
specific shares to be sold, public offering price, the names of any such agent,
dealer or underwriter and any applicable commission or discount with respect to
a particular offer will be set forth in an accompanying Prospectus Supplement.
See "Selling Stockholder" and "Plan of Distribution."
 
                 THE DATE OF THIS PROSPECTUS IS APRIL   , 1998
<PAGE>
 
                             AVAILABLE INFORMATION
 
  The Company is subject to the informational reporting requirements of the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), and, in
accordance therewith, files reports, proxy statements and other information
with the Securities and Exchange Commission (the "Commission"). Such reports,
proxy statements and other information filed by the Company may be inspected
and copied at the public reference facilities of the Commission located at
Judiciary Plaza, 450 Fifth Street, N.W., Washington, D.C. 20549, at the New
York Regional Office of the Commission, Seven World Trade Center, Suite 1300,
New York, New York 10048, and at the Chicago Regional Office of the
Commission, Northwest Atrium Center, 500 West Madison Street, Suite 1400,
Chicago, Illinois 60621. Copies of such material can also be obtained at
prescribed rates from the Public Reference Section of the Commission at 450
Fifth Street, N.W., Washington, D.C. 20549. The Common Stock is listed on the
New York and Pacific Stock Exchanges under the symbol "WKR." Reports, proxy
materials and other information concerning the Company can also be inspected
at the offices of the New York Stock Exchange, Inc., 20 Broad Street, New
York, New York 10005; and the Pacific Exchange, Inc., 618 South Spring Street,
Los Angeles, California 90014, and 301 Pine Street, San Francisco, California
94104.
 
  The Company has filed with the Commission a Registration Statement on Form
S-3 (together with any and all amendments, the "Registration Statement") under
the Securities Act of 1933, as amended (the "Securities Act"), with respect to
the registration of the Common Stock and associated Rights offered hereby.
This Prospectus does not contain all of the information set forth in the
Registration Statement and the exhibits thereto, certain portions of which
have been omitted as permitted by the rules and regulations of the Commission.
In addition, certain documents filed by the Company with the Commission have
been incorporated herein by reference. See "Incorporation of Certain Documents
by Reference." For further information regarding the Company and the Common
Stock and associated Rights offered hereby, reference is made to the
Registration Statement, including the exhibits and schedules thereto and the
documents incorporated herein by reference.
 
  The principal executive offices of the Company are located at 1955 North
Surveyor Avenue, Simi Valley, California 93063; (805) 526-5700.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
   
  The following documents, which have been filed by the Company with the
Commission, are incorporated herein by reference: (i) the Company's Annual
Report on Form 10-K for the fiscal year ended October 31, 1997, as amended by
Form 10-K/A dated April 8, 1998 (filed on April 8, 1998); (ii) the Company's
Proxy Statement dated March 3, 1998 related to the Annual Meeting of
Stockholders to be held on April 3, 1998; (iii) the Company's Quarterly Report
on Form 10-Q for the quarter ended January 31, 1998, as amended by Form 10-Q/A
dated April 8, 1998 (filed on April 8, 1998); (iv) the Company's Current
Reports on Form 8-K dated February 2, 1998 (filed on February 3, 1998) and
dated March 2, 1998 (filed on March 3, 1998), and on Form 8-K/A dated April 6,
1998 (filed on April 6, 1998); (v) a description of the Common Stock included
in a Registration Statement on Form 8-A filed on June 21, 1989; and (vi) a
description of the Rights included in a Registration Statement on Form 8-A
filed on November 23, 1988. In addition, each document filed by the Company
pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act subsequent
to the date of this Prospectus and prior to termination of the offering of
Shares shall be deemed to be incorporated by reference into this Prospectus
and to be a part hereof from the date such document is filed with the
Commission.     
 
  Any statement contained herein, or any document, all or a portion of which
is incorporated or deemed to be incorporated by reference herein, shall be
deemed to be modified or superseded for purposes of the Registration Statement
and this Prospectus to the extent that a statement contained herein, or in any
subsequently filed document that also is or is deemed to be incorporated by
reference herein, modifies or supersedes such statement. Any such statement so
modified or superseded shall not be deemed, except as so modified or
superseded, to constitute part of the Registration Statement or this
Prospectus.
 
  The Company undertakes to provide without charge to each person to whom a
copy of this Prospectus has been delivered, upon written or oral request of
any such person, a copy of any or all of the documents incorporated by
reference herein, other than exhibits to such documents, unless such exhibits
are specifically incorporated by reference into the information that this
Prospectus incorporates. Written or oral requests for such copies should be
directed to: Lynne M.O. Brickner, Vice President and Secretary, Whittaker
Corporation, 1955 North Surveyor Avenue, Simi Valley, California 93063; (805)
526-5700.
 
                                       2
<PAGE>
 
                              RECENT DEVELOPMENTS
 
  Since July 31, 1996, the Company has not been in compliance with one or more
of the four financial ratio covenants in its bank credit agreement and at
January 31, 1998 the Company was not in compliance with any of such covenants.
Below is a summary of the requirements of the four financial ratio covenants
and the actual ratios and levels at January 31, 1998:
 
<TABLE>
<CAPTION>
                                                 MINIMUM REQUIRED     ACTUAL
                                                 ----------------- ------------
     <S>                                         <C>               <C>
     Fixed Charge Coverage Ratio................           1.75           (0.48)
<CAPTION>
                                                 MAXIMUM PERMITTED    ACTUAL
                                                 ----------------- ------------
     <S>                                         <C>               <C>
     Leverage Ratio.............................           0.45            1.19
<CAPTION>
                                                 MAXIMUM PERMITTED    ACTUAL
                                                 ----------------- ------------
     <S>                                         <C>               <C>
     Cash Flow Ratio............................           3.50          (16.36)
<CAPTION>
                                                 MINIMUM REQUIRED     ACTUAL
                                                 ----------------- ------------
     <S>                                         <C>               <C>
     Consolidated Net Worth.....................   $135,204,000    $(20,316,000)
</TABLE>
 
  The Company has obtained successive waivers of these defaults. The latest
waiver, dated March 31, 1998, waives the defaults up to but not including May
29, 1998. The sale of Whittaker Xyplex, Inc. and the application of the sale
proceeds to reduce the debt of the Company increased the net worth of the
Company and reduced financial leverage but the Company does not expect to be
in compliance with the above financial ratio covenants within the next twelve
months. Consequently, the Company has initiated discussions with other lenders
regarding refinancing the current credit agreement with a credit agreement
that includes financial ratio covenants with which the Company will be able to
comply. Management estimates that such refinancing will be completed by the
expiration date of the current waiver.
 
                                USE OF PROCEEDS
 
  The proceeds from the sale of the shares of Common Stock offered hereby are
solely for the account of the Selling Stockholder. Accordingly, the Company
will receive none of the proceeds from sales thereof.
 
                              SELLING STOCKHOLDER
 
  As of the date of this Prospectus, Raytheon Company, a Delaware corporation,
the Selling Stockholder, owns 1,974,333 shares of Common Stock (approximately
18% of the Common Stock outstanding as of February 6, 1998). Assuming that the
Selling Stockholder sells all 1,974,333 shares of Common Stock offered hereby
(the "Shares"), the Selling Stockholder will no longer own beneficially any
shares of Common Stock.
 
  In connection with the issuance of the 1,974,333 Shares of Common Stock to
the Selling Stockholder, the Company agreed to file and use its best efforts
to cause to be declared effective the Registration Statement of which this
Prospectus is a part. The Company has also agreed to keep the Registration
Statement effective until the first to occur of (i) the third anniversary of
the effective date of the Registration Statement or (ii) such time as all of
the Shares have been sold. The Company has agreed to indemnify the Selling
Stockholder and its officers, directors and controlling persons against
certain liabilities, including certain liabilities under the Securities Act.
The Company has agreed to pay its expenses of registering the Shares under the
Securities Act, including registration and filing fees, blue sky expenses,
printing expenses, administrative expenses and its own counsel fees.
 
                             PLAN OF DISTRIBUTION
 
  The Selling Stockholder may sell Shares in any of the following
transactions: (i) through dealers; (ii) through agents; or (iii) directly to
one or more purchasers. The distribution of the Shares by the Selling
Stockholder may be effected from time to time in one or more transactions on
the New York or Pacific Stock
 
                                       3
<PAGE>
 
Exchanges or in privately negotiated transactions at market prices prevailing
at the time of sale, at prices related to such prevailing market prices or at
negotiated prices. The Selling Stockholder and any underwriters, dealers or
agents that participate in the distribution of the Shares may be deemed to be
underwriters within the meaning of Section 2(11) of the Securities Act, and
any profit on the sale of the Shares by them and any discounts, concessions or
commissions received by any such underwriters, dealers or agents might be
deemed to be underwriting discounts and commissions under the Securities Act.
At the time a particular offer of Shares is made, to the extent required, a
Prospectus Supplement will be distributed which will set forth the aggregate
number of Shares being offered and the terms of the offering, including the
name or names of any underwriters, dealers or agents, any discounts,
concessions or commissions and other items constituting compensation from the
Selling Stockholder and any discounts, commissions or concessions allowed or
reallowed or paid to dealers.
 
  Certain of the underwriters, dealers or agents may have other business
relationships with the Company and its affiliates in the ordinary course of
business.
 
                                 LEGAL MATTERS
 
  The validity of the shares of Common Stock offered hereby has been passed
upon for the Company by Lynne M.O. Brickner, Vice President, Secretary and
General Counsel of the Company. As previously disclosed in the Company's Proxy
Statement dated March 3, 1998, Ms. Brickner has been granted options to
purchase shares of the Company's Common Stock under the Company's Long-Term
Incentive Plan (1989).
 
                                    EXPERTS
 
  The consolidated financial statements of Whittaker Corporation appearing in
Whittaker Corporation's Annual Report (Form 10-K/A) for the year ended October
31, 1997, have been audited by Ernst & Young LLP, independent auditors, as set
forth in their report thereon included therein and incorporated herein by
reference. Such consolidated financial statements are incorporated herein by
reference in reliance upon such report given upon the authority of such firm
as experts in accounting and auditing.
 
                                       4
<PAGE>
 
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- -------------------------------------------------------------------------------
 
  NO DEALER, SALESPERSON OR OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS
PROSPECTUS AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS IN
CONNECTION WITH THIS OFFERING MUST NOT BE RELIED UPON AS HAVING BEEN
AUTHORIZED BY THE COMPANY OR BY THE SELLING STOCKHOLDER. THIS PROSPECTUS DOES
NOT CONSTITUTE AN OFFER TO SELL OR A SOLICITATION OF AN OFFER TO BUY ANY OF
THE SECURITIES OFFERED HEREBY BY ANYONE IN ANY JURISDICTION IN WHICH SUCH
OFFER OR SOLICITATION IS NOT AUTHORIZED OR IN WHICH THE PERSON MAKING SUCH
OFFER OR SOLICITATION IS NOT QUALIFIED TO DO SO OR TO ANY PERSON TO WHOM IT IS
UNLAWFUL TO MAKE SUCH OFFER OR SOLICITATION. NEITHER THE DELIVERY OF THIS
PROSPECTUS NOR ANY SALE MADE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE
AN IMPLICATION THAT THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME
SUBSEQUENT TO THE DATE OF THIS PROSPECTUS.
 
                               ----------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Available Information......................................................   2
Incorporation of Certain Documents
 by Reference..............................................................   2
Recent Developments........................................................   3
Use of Proceeds............................................................   3
Selling Stockholder........................................................   3
Plan of Distribution.......................................................   3
Legal Matters..............................................................   4
Experts....................................................................   4
</TABLE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
 
                               1,974,333 SHARES
 
                                   WHITTAKER
                                  CORPORATION
 
                                 COMMON STOCK
                          (Par Value $.01 per Share)
 
                               ----------------
 
                                  PROSPECTUS
 
                               ----------------
 
                                 April  , 1998
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                                    PART II
 
                    INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
 
  The following table sets forth the fees and expenses payable by the Company
in connection with the issuance and distribution of the securities being
registered hereunder, other than underwriting discounts and commissions.
Except for the SEC registration fee, all amounts are estimates.
 
<TABLE>
      <S>                                                               <C>
      SEC Registration Fee............................................. $12,936
      NASD Filing Fee..................................................     --
      Printing and Engraving Expenses..................................   5,000
      Legal Fees and Expenses..........................................  25,000
      Accounting Fees and Expenses.....................................   5,000
      Registrar and Transfer Agent Fees and Expenses...................   1,000
      Blue Sky Fees and Expenses.......................................   5,000
      Miscellaneous Expenses...........................................   1,064
                                                                        -------
        Total.......................................................... $55,000
                                                                        =======
</TABLE>
 
  All of the costs identified above will be paid by the Company.
 
ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
  Section 102(b)(7) of the General Corporation Law of Delaware ("Delaware
Law") enables a corporation in its original certificate of incorporation or an
amendment thereto to eliminate or limit the personal liability of a director
to a corporation or its stockholders for violations of the director's
fiduciary duty, except (i) for any breach of a director's duty of loyalty to
the corporation or its stockholders, (ii) for acts or omissions not in good
faith or which involve intentional misconduct or a knowing violation of law,
(iii) pursuant to Section 174 of the Delaware Law (providing for liability of
directors for unlawful payment of dividends or unlawful stock purchases or
redemptions, or (iv) for any transaction from which a director derived an
improper personal benefit. The Restated Certificate of Incorporation of the
Company, as amended, provides for the elimination of the liability of
directors to the extent permitted by Delaware Law.
 
  Section 145 of the Delaware Law provides, in summary, that directors and
officers of Delaware corporations are entitled, under certain circumstances,
to be indemnified against all expenses and liabilities (including attorney's
fees) incurred by them as a result of suits brought against them in their
capacity as a director or officer, if they acted in good faith and in a manner
they reasonably believed to be in or not opposed to the best interests of the
corporation, and, with respect to any criminal action or proceeding, if they
had no reasonable cause to believe their conduct was unlawful; provided, that
no indemnification may be made against expenses in respect of any claim, issue
or matter as to which they shall have been adjudged to be liable to the
corporation, unless and only to the extent that the court in which such action
or suit was brought shall determine upon application that, despite the
adjudication of liability but in view of all the circumstances of the case,
they are fairly and reasonably entitled to indemnity for such expenses which
the court shall deem proper. Any such indemnification may be made by the
corporation only as authorized in each specific case upon a determination by
the stockholders or disinterested directors that indemnification is proper
because the indemnitee has met the applicable standard of conduct. The
Company's Bylaws entitle officers and directors of the Company to
indemnification to the fullest extent permitted by Delaware Law.
 
  The Company has entered into an agreement with each of its directors and
certain officers which provide for indemnification by the Company against
certain liabilities, including liabilities under the Securities Act. In
addition, the Company maintains an insurance policy with respect to potential
liabilities of its directors and officers, including potential liabilities
under the Securities Act.
 
  See Item 17 of this Registration Statement regarding the opinion of the
Securities and Exchange Commission with respect to indemnification for
liabilities arising under the Securities Act.
 
                                     II-1
<PAGE>
 
ITEM 16. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.
 
<TABLE>
<CAPTION>
      EXHIBIT
      NUMBER  DESCRIPTION OF EXHIBIT
      ------- ----------------------
      <C>     <S>
        5.1   Opinion of Lynne M.O. Brickner, Esq. (previously filed).
       23.1   Consent of Lynne M.O. Brickner, Esq. (included in Exhibit 5.1).
       23.2   Consent of Ernst & Young LLP.
       24.1   Powers of Attorney of certain directors and officers of the
              Company (previously filed).
       24.2   Certificate of Substitution to Power of Attorney (previously
              filed).
</TABLE>
 
ITEM 17. UNDERTAKINGS.
 
  Insofar as indemnification for liabilities arising under the Securities Act
of 1933, as amended (the "Securities Act") may be permitted to directors,
officers and controlling persons of the registrant pursuant to the provisions
described under Item 15 above, or otherwise, the registrant has been advised
that in the opinion of the Securities and Exchange Commission such
indemnification is against public policy as expressed in the Securities Act
and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
registrant of expenses incurred or paid by a director, officer, or controlling
person of the registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer of controlling person in
connection with the securities being registered, the registrant will, unless
in the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the
Securities Act and will be governed by the final adjudication of such issue.
 
  The undersigned registrant hereby undertakes:
 
    (1) To file, during any period in which offers or sales are being made, a
  post-effective amendment to this registration statement:
 
      (i) To include any prospectus required by Section 10(a)(3) of the
    Securities Act;
 
      (ii) To reflect in the prospectus any facts or events arising after
    the effective date of the registration statement (or the most recent
    post-effective amendment thereof) which, individually or in the
    aggregate, represent a fundamental change in the information set forth
    in the registration statement;
 
      (iii) To include any material information with respect to the plan of
    distribution not previously disclosed in the registration statement or
    any material change to such information in the registration statement;
 
    provided, however, that paragraphs (1)(i) and (1)(ii) do not apply if
    the registration statement is on Form S-3, Form S-8 or Form F-3, and
    the information required to be included in a post-effective amendment
    by those paragraphs is contained in periodic reports filed by the
    registrant pursuant to Section 13 or 15(d) of the Securities Exchange
    Act of 1934, as amended ("Exchange Act") that are incorporated by
    reference in the registration statement.
 
    (2) That, for the purpose of determining any liability under the
  Securities Act, each such post-effective amendment shall be deemed to be a
  new registration statement relating to the securities offered therein, and
  the offering of such securities at that time shall be deemed to be the
  initial bona fide offering thereof.
 
    (3) To remove from registration by means of a post-effective amendment
  any of the securities being registered which remain unsold at the
  termination of the offering.
 
  The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act, each filing of the
registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Exchange Act (and, where applicable, each filing of an employee benefit plan's
annual report pursuant to section 15(d) of the Exchange Act) that is
incorporated by reference in the registration statement shall be deemed to be
a new registration statement relating to the securities offered therein, and
the offering of such securities at that time shall be deemed to be the initial
bona fide offering thereof.
 
                                     II-2
<PAGE>
 
                                  SIGNATURES
   
  Pursuant to the requirements of the Securities Act of 1933, the Registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-3 and has duly caused this registration
statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Simi Valley, State of California, on April 9, 1998.
    
                                          WHITTAKER CORPORATION
 
                                          By      /s/ Lynne M.O. Brickner
                                            ___________________________________
                                                   (Lynne M.O. Brickner,
                                                      Vice President)
 
                                          Date         
                                                    April 9, 1998     
                                              _________________________________
 
  Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed below by the following persons in the
capacities and on the dates indicated.
 
<TABLE>   
<CAPTION>
             SIGNATURE                           TITLE                    DATE
             ---------                           -----                    ----
 
 
<S>                                  <C>                           <C>
      /s/ Joseph F. Alibrandi           Director and Principal        April 9, 1998
____________________________________      Executive Officer
        (Joseph F. Alibrandi)
 
          /s/ John K. Otto                    Principal               April 9, 1998
____________________________________      Financial Officer
            (John K. Otto)
 
          /s/ Eva Jonutis                     Principal               April 9, 1998
____________________________________      Accounting Officer
            (Eva Jonutis)
 
     /s/ George H. Benter, Jr.*                Director               April 9, 1998
____________________________________
       (George H. Benter, Jr.)
 
____________________________________           Director              
        (George Deukmejian)
 
____________________________________           Director
         (Jack L. Hancock)
 
       /s/ Edward R. Muller*                   Director               April 9, 1998
____________________________________
          (Edward R. Muller)
 
       /s/ Gregory T. Parkos*                  Director               April 9, 1998
____________________________________
         (Gregory T. Parkos)
 
      /s/ Malcolm T. Stamper*                  Director               April 9, 1998
____________________________________
         (Malcolm T. Stamper)
</TABLE>    
 
*By:/s/ Lynne M.O. Brickner
  ---------------------------          Attorney-In-Fact
      (Lynne M.O. Brickner)
 
                                      S-1
<PAGE>
 
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
 EXHIBIT                                                             SEQUENTIAL
   NO.                     DESCRIPTION OF EXHIBIT                     PAGE NO.
 -------                   ----------------------                    ----------
 <C>     <S>                                                         <C>
    5.1  Opinion of Lynne M. O. Brickner, Esq. (previously filed).
   23.1  Consent of Lynne M. O. Brickner, Esq. (included in
         Exhibit 5.1).
   23.2  Consent of Ernst & Young LLP.
   24.1  Powers of Attorney of certain directors and officers of
         the Company (previously filed).
   24.2  Certificate of Substitution to Power of Attorney
         (previously filed).
</TABLE>

<PAGE>
 
                                                                    EXHIBIT 23.2
 
  We consent to the reference to our firm under the caption "Experts" in the
Registration Statement (Form S-3) and related Prospectus of Whittaker
Corporation for the registration of 1,974,333 shares of its common stock and to
the incorporation by reference therein of our report dated December 12, 1997,
with respect to the consolidated financial statements of Whittaker Corporation
included in its Annual Report (Form 10-K/A) for the year ended October 31,
1997, filed with the Securities and Exchange Commission.
 
                                          /s/ Ernst & Young LLP
 
Los Angeles, California
   
April 9, 1998     


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