# STC SA2779NM-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: United Airlines Inc, United States
- Description: Activation of previously installed and certified full TCAS provisions (STC SA2777NM-D), in accordance with United Air Lines, DAS-1-WE, Approved Master Drawing List No. 2779 dated December 13, 1990, or later FAA approved revisions.
- Applied: September 10, 1990
- Status date: November 30, 2011
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE)
- Certificate PDF: https://openairdocs.org/files/sha256/26/c1/26c194ea8e9d97f3cbf9565079eea6fc57720712825263deab309950201484c2
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/245AC29C05C214DE86257996005C0B73.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2779NM-D

## 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.

600 Jefferson Street Houston, Texas 77002 Part 25 of the Federal Aviation Regulations

A16WE

Boeing

737-222 Description of Type Design Change: Activation of previously installed and certified full TCAS provisions (STC SA2777NM-D), in accordance with United Air Li nes, DAS-1-WE, Approved Master Drawing List No. 2779 dated December 13, 1990, or later FAA approved revisions.

Limitations and Conditions: This approval does not extend 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 previ ously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. If th e 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.

Refer to AFM supplement.

This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration.

Date of application: September 10, 1990

Date of issuance: December 13, 1990

Date reissued: November 30, 2011

( Signature) Haifa Haj-Eid 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)

- November 30, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/26/c1/26c194ea8e9d97f3cbf9565079eea6fc57720712825263deab309950201484c2)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.