# STC SA3549WE - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Airweld Inc., United States - Description: Installation of Garrett GTCP85-98CK Auxiliary Power Unit in the aft end of the forward baggage compartment - Applied: July 13, 1977 - Status date: April 28, 2008 - Product: Aircraft, Large Multi-Engine - Certification basis: Part 21 - Data sheets: [TCDS 4A26](https://openairdocs.org/tcds/4A26) - Certificate PDF: https://openairdocs.org/files/sha256/c0/93/c09372004fda9891470232ddd88c83b76c22befd13cf5fd9c632ff7eff3b8e21 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7FFC5949F7BC4E5C86257448007775FB.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA3549WE ## ADs that name it (0) None. ## Approved models (3) - The Boeing Company 707-300 Series ([TCDS 4A26](https://openairdocs.org/tcds/4A26)) - The Boeing Company 707-300B Series ([TCDS 4A26](https://openairdocs.org/tcds/4A26)) - The Boeing Company 707-300C Series ([TCDS 4A26](https://openairdocs.org/tcds/4A26)) ## 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. 8167 BELVEDERE AVENUE, SUITE D SACRAMENTO, CALIFORNIA 95826 Part 4b of the Civil Air Regulations. *Certification basis is set forth in Type Certificate Data Sheet TCDS Original Product Type Certificate Number : 4A26 Boeing *See Page 3 Description of Type Design Change : Installation of Garrett GTCP85-98CK Auxiliary Power Unit in the aft end of the forward baggage compartment in accordance with FAA approved World Airways, Inc., Master Drawing List No. 493000, Revision B, or late r FAA approved revision. The Airplane Flight Manual Supplement No. 491-3 dated January 27, 1978, or later FAA approved revision is required. Limitations and Conditions : This installation is approved for gr ound operation only. The approval of this change in type design applies to the airplane models listed on Page 3 only. This approval should not be extended to other specific aircraft of these mode ls on which other previous ly approved modifications are incorporated unless it is determined by the installe r that the interrelationship between this change and any of those previously approved modifications w ill introduce no adverse effect upon the airworthiness of these listed aircraft. A copy of this STC must be included in the permanent records of the modified 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. Date of application : July 13, 1977 Date of issuance : January 27, 1978 Date reissued : November 24, 1987; July 16, 1997; January 5, 2000; December 3, 2001; April 28, 2008 Date amended : **See Page 3 ( Signature) Manager, Propulsion Branch 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.** Number SA3549WE Date of Application: July 13, 1977 Date of Issuance: January 27, 1978 Date Reissued: November 24, 1987, July 16, 1997, January 5, 2000, December 3, 2001, April 28, 2008 *Applicable Models: 707-321B, 707-368C, 707-3M1C, 707-328C, 707-330B, 707-3P1C, 707-331B, 707-331C, 707-345C, 707-379C, 707-323C, 707-320C, 707-355C, 707-351B, 707-366C, 707-3L6C, 707-337C, 707-3F5C, 707-382B, 707-351C, 707-3W6C, 707-373C, 707-3J6B, 707-344C, 707-384C **Date Amended: December 19, 1980, to add models 707-368C January 9, 1985, to add models B707-3M1C, -328C, -330B August 15, 1985, to add model B707-3P1C April 27, 1987, to add models 707-331B, -331C, -345C, -379C, -323C, -320C, -355C, -351B August 11, 1988, to add models 707-366C, -3L6C, -337C, -3F5C, -382B October 10, 1991, to add model 707-351C October 29, 1993, to add model 707-3W6C May 2, 1995, to add models 707-373C, -3J6B August 2, 1996, to add model 707-344C January 28, 1999, to add model 707-384C -END- ## Every issue (1) - April 28, 2008: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/c0/93/c09372004fda9891470232ddd88c83b76c22befd13cf5fd9c632ff7eff3b8e21) --- 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.