# STC SA1496WE - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Northwest Airlines, Inc., United States - Description: Installation of fire detection aural warning system. - Applied: June 5, 1967 - Status date: November 14, 1986 - Product: Aircraft, Large Airplane - Data sheets: [TCDS 7A1](https://openairdocs.org/tcds/7A1) - Certificate PDF: https://openairdocs.org/files/sha256/3d/f5/3df5cda6ef0cec23db1ff838e0ef398d98ad59734c0a6b00c541e14cdd24918c - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID135151241420260805181724.0001 - DRS record last changed: August 5, 2026 - Page: https://openairdocs.org/stc/SA1496WE ## ADs that name it (0) None. ## Approved models (1) - Fairchild Industries Inc. F27-A ([TCDS 7A1](https://openairdocs.org/tcds/7A1)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA19964E This certificate issued to: Northwest Airlines, Inc. 2700 Lone Oak Parkway Eagan, MN 55124 Part AD of the CiVil Air Regulations. Original Product -Iype bertificate Aumber: 1A1 Make: Fairchild Model: F-27A Description of Type Design Change: Installation of Fire Detection Aural Warning System in accordance with Pacific Air Lines Engineering Order 726 E 002 Revision C, pages 1 through 6, dated July 7, 1967. 1. The functional and performance characteristics of the system have not been determined, therefore emergency procedures must not be predicated on its use. 2. FAA approved Pacific Air Lines Flight Manual Supplement 1, dated August 28, 1967 is required with this installation. cont. on page s Date of Application: June 5, 1967 Date of Issuance: August 28, 1967 Date Amended: November 14, 1986 Date Reissued: October 13, 1982 FEDERAL AVIATIO By dingig the Alministrator W. t. forn (Signature) TOMIN IS TRATO Manager, Chicago Aircraft Certification Office ACE-115C, Central Region, FAA (Title) United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA1496WE Date of Application: June 5, 1967 Date of Issuance: August 28, 1967 Limitations and Conditions: (continued): 3. The approval of this change in type design applies basically to Fairchild Model F-27A only. other specific airplanes of this model on which other previously approved This approval should not be extended to evously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane. - END- 47. **PAGE 3 OF 3 PAGES FAA AC 72-4435** ## Every issue (1) - November 14, 1986: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/3d/f5/3df5cda6ef0cec23db1ff838e0ef398d98ad59734c0a6b00c541e14cdd24918c) --- 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.