# STC SA5987NM-D - Type: Supplemental type certificate - Status: Current, Reissued - Holder: United Airlines Inc, United States - Description: Remove the tourist class triple seat assemblies at the Type III overwing exits (LH and RH) and install inboard double seat assemblies in their place. The resulting interior arrangement will change from 8F/120Y to 8F/118Y. This installation is in accordance with United Air Lines, DAS-1-WE, Approved Drawing List No. 5987 dated January 11, 1994, or later FAA approved revisions. - Applied: January 9, 1994 - 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/sha256/23/12/23129ea93fe0693846a60473ca93d208665d602806e94737effbc4abd2ed842b - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/94F0B82790042937862579920052BD94.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA5987NM-D ## ADs that name it (0) None. ## Approved models (1) - The Boeing Company 737-300 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. This Certificate issued to United Air Lines, Inc. 600 Jefferson Street Houston, Texas 77002 Part 25 of the Federal Aviation Regulations. Ref. T.C. Data Sheet A16WE for Special Conditions. A16WE Boeing 737-300 Series Description of Type Design Change: Remove the tourist class triple seat assemblies at the Type III overwing exits (LH and RH) and install inboard double seat assem blies in their place. The resulting interior arrangement will change from 8F/120Y to 8F/118Y. This installation is in accordance with United Air Lines, DAS-1-WE, Approved Drawing List No. 5987 dated January 11, 1994, or later FAA approved revisions. Limitations and Conditions: The approval does not extend to other ai rcraft of this model on which other previously approved modifications are incorporated 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. 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: January 9, 1994 Date of issuance: January 11, 1994 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/sha256/23/12/23129ea93fe0693846a60473ca93d208665d602806e94737effbc4abd2ed842b) --- 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.