# STC SA2757NM-D - Type: Supplemental type certificate - Status: Current, Reissued - Holder: United Airlines Inc, United States - Description: Revise seating configuration to increase coach seating in accordance with United Air Lines DAS-1-WE Approved Drawing List No. 2757 dated February 23, 1989, or later FAA approved revisions. - Applied: January 20, 1989 - Status date: November 30, 2011 - Product: Aircraft, Large Multi-Engine - Certification basis: Part 21, Part 25 - Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE) - Certificate PDF: https://openairdocs.org/files/sha256/fe/86/fe867b0acebebda96c79091037022cb351dc47fed716b474f57fafaa96d605eb - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A493AD82DB30F8C1862579960053635D.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA2757NM-D ## ADs that name it (0) None. ## Approved models (3) - The Boeing Company 747-200B Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE)) - The Boeing Company 747-200C Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE)) - The Boeing Company 747-200F Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE)) ## 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 the Federal Aviation Regulations. See Type Certificate Data Sheet A20WE for Special Conditions. A20WE Boeing 747-200 Series Description of Type Design Change : R evise seating configuration to increase coach seating in accordance with United Air Lines DAS-1-W E Approved Drawing List No. 2757 dated February 23, 1989, or later FAA approved revisions. Limitations and Conditions: This approval should not be extende d to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between th is change and any of those previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. This determination should include consideration of signi ficant changes in weight distribution such as an increase in the fixed disposable weight in the fuselage. If the holder agrees to permit another person to use this certificate 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: January 20, 1989 Date of issuance: February 23, 1989 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/fe/86/fe867b0acebebda96c79091037022cb351dc47fed716b474f57fafaa96d605eb) --- 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.