# STC SA2777NM-D - Type: Supplemental type certificate - Status: Current, Reissued - Holder: United Airlines Inc, United States - Description: Installation dual Mode-S/ATCRBS transponders and full Traffic Alert Collision Avoidance System (TCAS) provisions in accordance with United Ai Lines DAS-1-WE Approved Master Drawing List No. 2777 dated July 18, 1990, or later FAA approved revisions. United Air Lines Airplane Flight Manual Supplement to FAA Approved Flight Manual D6-8737-222 dated July 18, 1990, or later FAA approved revision is required as part of this installation. - Applied: June 8, 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/sha256/96/06/9606117a070aa72c40f84cc1697a922c16957a9dd69939f286ac4d198cdbc4c0 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/029DD09110B880C186257996005D7886.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA2777NM-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 Administration. *Reference Type Certificate Data Sheet A16WE for Special Conditions. A16WE Boeing 737-222 Description of Type Design Change: Installation dual Mode-S/ATCRBS transponders and full Traffic Alert Collision Avoidance System (TCAS) provisi ons in accordance with United Ai Lines DAS-1-WE Approved Master Drawing List No. 2777 dated July 18, 1990, or later FAA approved revisions. United Air Lines Airplane Flight Manual Supplement to FAA Approved Flight Manual D6-8737-222 dated July 18, 1990, or later FAA approved revision is required as part of this installation. Limitations and Conditions: This approval should not extend to othe r aircraft of this model on which other previously approved modifications are incorporat ed unless it is determined by the installer that the interrelationship between this cha nge and any of those other previ ously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. The Mode-S functions of the system are not approved for Traffic Alert and Collision Avoidance System (TCAS) Operation. The TCAS function of the Smith’s IVSI’s are not approved TC AS operation. Refer to AFM Supplement. If the holder agrees to permit another person to use this certif icate to alter the product, the holder shall give the other person written evidence of that permission. 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: June 8, 1990 Date of issuance: July 18, 1990 Date reissued: November 30, 2011 Date amended: February 1, 1991, September 10, 1990 ( 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/sha256/96/06/9606117a070aa72c40f84cc1697a922c16957a9dd69939f286ac4d198cdbc4c0) --- 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.