# STC SA3453NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Northrop Grumman Systems Corporation, United States
- Description: Installation of Triple Litton LTN-92 Inertial Navigation System
- Applied: December 2, 1986
- Status date: February 22, 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/sha256/74/ad/74ada543250bf34f9e993167da8124c0209625c010178dd46446c11e8f007a75
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BB49DC6F7340982586257F6B006159CF.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3453NM

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company DC-10-30 ([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.

United States Of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate This certificate has been reissued to replace the original certificate reported as lost.

Number SA3453NM

This Certificate issued to

Part 25 of the Federal Aviation Regulations.

(For certification basis see T.C. Date Sheet A22WE)

Description of Type Design Change: Installation of Triple Litton LTN-92 Inertial Navigation System in accordance with FAA approved Litton Top Drawing 454050-05, Revision “A”, dated January 6, 1987, or later FAA Approved revision. FAA Approved Airplane Flight Manual Supplement, dated January 13, 1987, or later FAA approved revision is required with this installation.

Limitations and Conditions: The approval of this change in type design applies basically to the above noted airplane model series only. This installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this change and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Northrop Grumman Systems Corporation 21240 Burbank Blvd.

Woodland Hills, CA 91367-6675 A22WE

The Boeing Company

DC-10-30 Original Product Type Certificate Number:

Date of application: December 2, 1986

Date of issuance: January 13, 1987

Date reissued: March 30, 2015, February 22, 2016

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

(Title)

## Every issue (2)

- February 22, 2016: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/74/ad/74ada543250bf34f9e993167da8124c0209625c010178dd46446c11e8f007a75)
- March 30, 2015: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/f0/01/f0014539b2182907ee724885d293dafe4a1b8db6b16f40d56638b99b624438cf)

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