# STC ST00115LA

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Northrop Grumman Systems Corporation, United States
- Description: Installation of Triple LTN-92 inertial navigation systems and dual LTN-2001 gloal positioning sensors.
- Applied: May 11, 1995
- Status date: April 12, 2016
- Product: Aircraft, Large Airplane
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS 4A26](https://openairdocs.org/tcds/4A26)
- Certificate PDF: https://openairdocs.org/files/sha256/83/df/83df4aad56d4e4a908789ae0d5711dd1aee3aadf26ef1d115a72eae4c3c54270
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/624A5E25D7BE644686257FA2006CDE23.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST00115LA

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 707-300 Series ([TCDS 4A26](https://openairdocs.org/tcds/4A26))

## 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 ST00115LA This Certificate issued to Northrop Grumman Systems Corporation 21240 Burbank Blvd.

Woodland Hills, CA 91367-6675

Part 25* of the Federal Aviation Regulations *Certification basis is set forth in Type Certificate Data Sheet 4A26.

4A26

Boeing

707-300 Series Description of Type Design Change : Installation of Litton Triple LTN-92 Inertial Navigation Systems (INS) and dual LTN -2001 Global Positioning Sensors (GPS) in accordance with FAA approved Litton Top Installation Drawing No. 452853-34 Revision “A” dated October 19, 1995 or later FAA approved revision.

Litton Airplane Flight Manual Supplement Document No. 464209 Revision “N/C” , FAA approved on October 11, 1995, or later FAA approved revision is required as part of this installation.

Limitations and Conditions: The installation should not be incorporated in any aircraft 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 e ffect upon the airworthiness of the aircraft. The approval of this modification applies to the above noted airplane model series only. A copy of this certificate must be maintained as part of the permanent records for the modified aircraft. If the holde r 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. The operational aspects of the Mission Computer, fourth INS (INS -4), and third GOS (GPS -3) previous ly installed on the aircraft were not evaluated by the FAA.

Date of application: May 11, 1995

Date of issuance: October 23, 1995

Date reissued: December 11, 1997, April 12, 2016

Date amended: November 5, 1997

(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/sha256/83/df/83df4aad56d4e4a908789ae0d5711dd1aee3aadf26ef1d115a72eae4c3c54270)

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