# STC SA1108NW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Aviation Technical Services, United States
- Description: Installation of a single Litton LTN-211 Omega/VLF navigation system
- Applied: October 10, 1980
- Status date: October 24, 2018
- Product: Aircraft, Large Airplane
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE)
- Certificate PDF: https://openairdocs.org/files/sha256/58/be/58bea42c2db872b43e81af2c5e2edd522c6881595d6066145eaf874e292f6162
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4F446354A002208B86258335004DC6BE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1108NW

## 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

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.

Un ited S tates of Am erica Department of Transportation - Federal Aviation Administration Supplemental Type Certificate

Number SA1108NW

This certificate, issued to Aviation Technical Services 3121 109th Street SW Everett, WA 98204-3500

Part 25 of the Federal Aviation Regulations. (See Type Certification Data Sheet A16WE for complete certification basis)

Original ProductType Certificate Number: A16WE Make: Boeing Model: 737-200

Description of the Type Design Change: Installation of a single Litton LTN-211 Omega/VLF navigation system in accordance with FAA Sealed TRAMCO, Inc. Top Drawing No. 80-053, Revision A dated November 19, 1980, and Revision B dated October 28, 1980, or later FAA approved drawing.

Limitations and Conditions: Approval of this change in Type Design applies basically to the above Model Aircraft only. This approval should not be extended to other Aircraft of this Model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effects upon the airworthiness of that Aircraft. A copy of this Certificate shall be maintained as part of the permanent records for the Modified Aircraft.

Date of application: October 10, 1980 Date reissued: October 24, 2018 Date of issuance: November 26, 1980 Date amended: April 21, 1981

FAA FORM 8110-2 (5/14) PAGE 1 OF 2 PAGES By direction of the Administrator

(Signature)

Manager, Seattle ACO Branch (Title)

## Every issue (1)

- October 24, 2018: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/58/be/58bea42c2db872b43e81af2c5e2edd522c6881595d6066145eaf874e292f6162)

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