Exhibit 3.3.1

                          CERTIFICATE OF INCORPORATION

                                       OF

                              ADS ACQUISITION, INC.



     1.   The name of the corporation is:

                              ADS ACQUISITION, INC.


     2.   The address of its registered office in the State of Delaware is 
Corporation Trust Center, 1209 Orange Street, in the City of Wilmington, 
County of New Castle. The name of its registered agent at such address is 
The Corporation Trust Company.

     3.   The nature of the business or purposes to be conducted or promoted 
is to engage in any lawful act or activity for which corporations may be 
organized under the General Corporation Law of Delaware.

     4.   The total number of shares of stock which the corporation shall 
have authority to issue is Seven Hundred Fifty (750); all of such shares 
shall be without par value.

     5.   The board of directors is authorized to make, alter or repeal the 
by-laws of the corporation. Election of directors need not be by written 
ballot.

     6.   The name and mailing address of the incorporator is:

               L. J. Vitalo
               Corporation Trust Center
               1209 Orange Street
               Wilmington, Delaware 19801

     I, THE UNDERSIGNED, being the incorporator hereinbefore named, for the 
purpose of forming a corporation pursuant to the General Corporation Law of 
Delaware, do make this certificate, hereby declaring and certifying that this 
is my act and deed and the facts herein stated are true, and accordingly have 
hereunto set my hand this 23rd day of July, 1996.


                                                 /s/  L. J. Vitalo
                                       ---------------------------------------
                                                    L. J. Vitalo


                           CERTIFICATE OF AMENDMENT

                                     OF

                         CERTIFICATE OF INCORPORATION

                                  * * * * *


     ADS Acquisition, Inc., a corporation organized and existing under and by 
virtue of the General Corporation Law of the State of Delaware, DOES HEREBY 
CERTIFY:

     FIRST:   That at a meeting of the Board of Directors of ADS Acquisition, 
Inc. resolutions were duly adopted setting forth a proposed amendment to the 
Certificate of Incorporation of said corporation, declaring said amendment to 
be advisable and calling a meeting of the stockholders of said corporation 
for consideration thereof. The resolution setting forth the proposed 
amendment is as follows:

     RESOLVED, that the Certificate of Incorporation of ADS Acquisition, 
     Inc. be amended by changing the First Article thereof so that, as 
     amended, said Article shall be and read as follows:

     The name of the corporation is Aerospace Display Systems, Inc.

     SECOND:  That thereafter, pursuant to resolution of its Board of 
Directors, a special meeting of the stockholders of said corporation was duly 
called and held, upon notice in accordance with Section 222 of the General 
Corporation Law of the State of Delaware at which meeting the necessary number 
of shares as required by statute were voted in favor of the amendment.

     THIRD:   That said amendment was duly adopted in accordance with the 
provisions of Section 242 of the General Corporation Law of the State of 
Delaware.



IN WITNESS WHEREOF, said ADS Acquisition, Inc. has caused this certificate to 
be signed by Robert A. Rankin, its Secretary, this Twenty-Third day of 
September, 1996.


                                            ADS Acquisition, Inc.


                                            By /s/  Robert Rankin
                                              ----------------------------
                                              Secretary