# STC SA1509NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: TASS Inc, United States
- Description: Installation of a Litton Model LTN-211 omega navigation system. (737-291)
- Applied: September 16, 1981
- Status date: June 1, 2009
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE)
- Certificate PDF: https://openairdocs.org/files/sha256/40/d9/40d9ab02916c42d1151c0746f4bd0a32082441274b7bfb72265aeb53f641f02b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5C5D57156C239FF9862575D100769C3D.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1509NM

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 737-200 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA1509NM This certificate issued to: TASS Inc.

12016 115th Avenue NE, Ste 100 Kirkland, WA 98034 Part 25 of the Federal Aviation Regulations.

Original Product - Type Certificate Number: A16WE Make: Boeing Model: 737-291 Description of Type Design Change:

Installation of a Litton Model LTN-211 Omega Navigation System in accordance with Frontier Airlines' Engineering Order #34-50-737-012 and Top Drawing, B-737 OMEGA/VLF Navigation System #634-112124 Revision B, or subsequent FAA approved revisions.

1. Compatibility of this design change with previously approved modifications must be determined by the installer.

2. Airplane Flight Manual Supplement dated August 13, 1982 or subsequent FAA approved revision is required.

3. If the holder agrees to permit another person to use this certificate, the holder shall give the other person written evidence of that permission.

Date of Application: September 16, 1981 Date Reissued: June 1, 2009 Date of Issuance: August 13, 1982 Date Amended:

FEDERAL AVIATION By Direction of the Administrator Todd Dixón (Signature) TOMINSTRATO ACO Manager Denver Aircraft Certification Office (Title)

## Every issue (1)

- June 1, 2009: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/40/d9/40d9ab02916c42d1151c0746f4bd0a32082441274b7bfb72265aeb53f641f02b)

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