What it approves
Installation of LTN-92 Inertial Navigation Systems
What the certificate says
From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.
This Certificate issued to Northrop Grumman Systems Corporation 21240 Burbank Blvd.
Woodland Hills, CA 91367-6675 Part 25* of the Federal Aviation Regulations.
(For Certification Basis see T. C. Data Sheet No. A20WE.)
A20WE
The Boeing Company
747-100 Series Description of Type Design Change : Installation of LTN -92 Inertial Navigation Systems in accordance with FAA Approved Litton Systems, Inc. Top Installation Drawing No. 454065-05, Revision A, dated July 25, 1989, or later FAA approved revision of this drawing.
Litton Airplane Flight Manual Supplement, Document No. 464882, Revision N/C, FAA Approved on August 11, 1989, or later FAA approved revision, is required as part of this installation.
Limitations and Conditions : The approval of this change in type design applies only to the above listed models airplanes. This approval should not be extended to other aircraft of this model on which other approved previously approved modifications are incorporated unless it is found by the install er that the interrelationship between this change and any of those previously approved modifications will introduce no adverse effect upon the airworthiness of the aircraft . If the holder agrees to permit another person to use this certificate to alter t he product, the holder shall give the other person written evidence of that permission.
Date of application : February 28, 1989
Date of issuance : August 11, 1989
Date reissued : March 30, 2015, February 22, 2016
Date amended : June 29, 1994
(Signature) Supervisor, Technical & Administrative Support Staff Los Angeles Aircraft Certification Office (Title)
ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.
Approved models · 1
| Make | Model | Data sheet |
|---|---|---|
| The Boeing Company | 747-100 Series | A20WE |
Every issue · 2
DRS keeps each issue of an STC as its own record, with its own certificate and attachments.
| Date | Status | Files |
|---|---|---|
| February 22, 2016 | Reissued, current | Certificate |
| March 30, 2015 | Reissued, earlier issue | Certificate |