# STC SA3434NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Northrop Grumman Systems Corporation, United States
- Description: Installation of Litton LTN-92 Inertial Navigation System
- Applied: May 5, 1986
- Status date: April 12, 2016
- Product: Aircraft, Large Airplane
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A22WE](https://openairdocs.org/tcds/A22WE)
- Certificate PDF: https://openairdocs.org/files/sha256/20/cb/20cba15ab50810ca1d5c9771ad169e89c012c60da7bb0ddc305a5699f3734164
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8E9BBDD7E752361B86257FA2006CA9F0.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3434NM

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company DC-10-10 ([TCDS A22WE](https://openairdocs.org/tcds/A22WE))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

FAA Form 8110-2(10-68) Page 1 of 2 Number SA3434NM 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 A22WE)

A22WE

McDonnell Douglas Corporation

DC-10-10 Description of Type Design Change : Installation of L itton LTN -92 Inertial Navigation System in accordance with FAA approved Western Airlines T op Drawing 110- 16014, Revision “B” dated September 13, 1986, or later FAA approved revision. FAA ap proved Airplane Flight Manual Supplement, dated November 17, 1986, or later FAA approved revision is required with this installation.

Limitations and Conditions : This approval should not be extended to other aircraft of these models on which other pr eviously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of tha t aircraft. A copy of this certificate must be maintained as part of the permanent records for the modified aircraft. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person writt en evidence of that permission.

Date of application: May 5, 1986

Date of issuance: November 25, 1986

Date reissued: October 12, 1988, April 12, 2016

(Signature) Supervisor, Technical & Administrative Support Staff Los Angeles Aircraft Certification Office (Title)

NOTE:

**DO NOT DELETE THIS PAGE.**

**DO NOT ADD ANY DATA TO THIS PAGE.**

**THIS PAGE IS FOR PAGE NUMBERING PURPOSES, PLEASE DISCARD PRINTED COPY.**

## Every issue (1)

- April 12, 2016: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/20/cb/20cba15ab50810ca1d5c9771ad169e89c012c60da7bb0ddc305a5699f3734164)

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