# STC SA2778NM-D - Type: Supplemental type certificate - Status: Current, Reissued - Holder: United Airlines Inc, United States - Description: Activation of full TCAS provisions previously installed by United Air Lines Change Order Authorization COA 7-3289 and certified under Supplemental Type Certificate STC SA2775NM-D in accordance with United Air Lines DAS-1-WE Approved Master Drawing List No. 2778, dated December 13, 1990, or later FAA approved revision. United Air Lines AFM Supplement to FAA Approved Flight Manual D6-8728-222 dated December 13, 1990, or later approved revision, is required as part of this installation. - Applied: August 8, 1990 - Status date: November 30, 2011 - Product: Aircraft, Large Multi-Engine - Certification basis: Part 21, Part 25 - Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE) - Certificate PDF: https://openairdocs.org/files/sha256/86/d1/86d145a3d9cfb9ad72eff6cbc2ec48a763395bf13b809388d403505031ac4da7 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D4D61382CEEA8F5586257996005FF02F.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA2778NM-D ## ADs that name it (0) None. ## Approved models (1) - The Boeing Company 727-200 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE)) ## 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. This Certificate issued to United Air Lines, Inc. 600 Jefferson Street Houston, Texas 77002 Part 25* of t he Federal Aviation Regulations. * Ref. Type Certificate Data Sheet A3WE for Special Conditions. A3WE Boeing 727-222 Series Description of Type Design Change: Activation of full TCAS provisions previously installed by United Air Lines Change Order Authoriza tion COA 7-3289 and certified under Supplemental Type Certificate STC SA2775NM-D in accordance with United Air Lines DAS-1-WE Approved Master Drawing List No. 2778, dated Decembe r 13, 1990, or later FAA approved revision. United Air Lines AFM Supplement to FAA Approved Flight Manual D6-8728-222 dated December 13, 1990, or later approved revision, is required as part of this installation. Limitations and Conditions: This approval does not extend to other aircraft of this model on which other previously approved modifications ar e incorporated 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 ffects upon the airworthine ss of that aircraft. Refer to AFM Supplement. If the 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. 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: August 8, 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) ## Every issue (1) - November 30, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/86/d1/86d145a3d9cfb9ad72eff6cbc2ec48a763395bf13b809388d403505031ac4da7) --- 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.