# STC SA5905NM - Type: Supplemental type certificate - Status: Current, Reissued - Holder: International Aviation Systems, Inc, United States - Description: Installation of an upgraded flight management system, global positioning system and radio system navigation sensors, vertical navigation system and upgraded fuel flowmeter indicators. - Applied: July 2, 1992 - Status date: May 11, 1998 - Product: Aircraft - Certification basis: Part 21 - Data sheets: [TCDS 4A26](https://openairdocs.org/tcds/4A26) - Certificate PDF: https://openairdocs.org/files/sha256/3e/32/3e324ac65b8df3e904af481944e0eeca58c09e960dcdef56eebd1f4c3dd58523 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/52BCE0E4F53C60C1862579BA0075CEDA.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA5905NM ## ADs that name it (0) None. ## Approved models (1) - The Boeing Company 707-300 Series ([TCDS 4A26](https://openairdocs.org/tcds/4A26)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. irited lates of Ammertes Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA5905NM This certificate issued to: International Aviation Systems, Inc. 309 S. Cloverdale C7 Seattle, WA 98108 Certifies that the change in the type design for the following product with the limitations and conditions therefor as specified hereon meets the airworthiness requirement's of Part 25 of the Federal Aviation Regulations. Original Product -Type Certificate Number: 4A26 Make: Boeing Model: 707-300 Description of Type Design Change: Installation of an upgraded flight management system, global positioning system and radio reference system navigation sensors, vertical navigation system and upgraded fuel flowmeter indicators in accordance with Aviatek Aeronautical Systems, Inc., Drawing List, drawing number AAS-400, Revision C, dated December 21, 1992. Limitations and Conditions: Approval of this change in type design applies to the above model aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate must be maintained as part of the permanent records for the modified aircraft. The STC holder will provide a written permission statement to each person it authorizes to use this certificate to alter the product. Date of Application: July 2, 1992 Date Reissued: May 11, 1998 Date of Issuance: December 18, 1992 Date Amended: FEDERAL AVIATION By pligh of the Sdministroghor unil albertai (Signature) TOMINIST RATOR Acting Manager, Seattle Aircraft Certification Office (Title) ## Every issue (1) - May 11, 1998: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/3e/32/3e324ac65b8df3e904af481944e0eeca58c09e960dcdef56eebd1f4c3dd58523) --- 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.