# STC SA3588WE-D - Type: Supplemental type certificate - Status: Current, Reissued - Holder: United Airlines Inc, United States - Description: Seat mix change from 223 passenger all coach charter configuration to 238 passenger all coach charter configuration. - Applied: December 1, 1978 - Status date: November 30, 2011 - Product: Aircraft, Large Multi-Engine - Certification basis: Part 21 - Data sheets: [TCDS 4A25](https://openairdocs.org/tcds/4A25) - Certificate PDF: https://openairdocs.org/files/sha256/3b/71/3b718eb4f1e48acba0fe219ed24ec60837141419e852e9c80d4ba8707e01791c - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EFB206612FD803408625799800544E91.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA3588WE-D ## ADs that name it (0) None. ## Approved models (1) - The Boeing Company DC-8-61 ([TCDS 4A25](https://openairdocs.org/tcds/4A25)) ## 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 4b of the Civil Air Regulations. (See Type Certificate Data Sheet 4A25) Original Product Type Certificate Number : 4A25 Boeing DC-8-61 Description of Type Design Change: Seat mix change from 223 passenger all coach charter configuration to 238 passenger all coach charter configuration. Installation is in accordance with United Air Lines DAS-1-WE Drawing List No. 3588 dated December 14, 1978, or later approved revisions.. Limitations and Conditions: The approval of this change in type design applies basically to DC-8-61. This approval should not be extended to other aircraft of this m odel on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifi cations will introduce no adverse effect upon the airworthiness of that aircraft. This determination should include consideration of significant changes in weight distribution such as an increase in the fix disposable weight in the fuselage. If the holder agrees to permit another person to use this certificate to alte r 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: December 1, 1978 Date of issuance: January 5, 1979 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/sha256/3b/71/3b718eb4f1e48acba0fe219ed24ec60837141419e852e9c80d4ba8707e01791c) --- 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.