The STC search system is a complimentary service provided to the aviation community. We hope you find it useful. We do not provide access to STC engineering. For that you need to contact the STC holder directly. Our primary product is a comprehensive library of aviation regulations and standards, including tools for generating Airworthiness Directive compliance reports.

No. of STCs: 8

STC Holder: Northrop Corporation 222 N. Prairie Avenue, Hawthorne, CA 90250, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA308WE	Status: Current	App Date:	Rev Date: 01/01/1960
Description: Voice interruption priority system.
TC Nos.: 4A27
Models: General Dynamics Corporation22 Series
ACO: AIR-770: West Certification Branch LA

STC Holder: Northrop Corporation 222 N. Prairie Avenue, Hawthorne, CA 90250, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA308WE	Status: Historical	App Date:	Rev Date:
Description: Voice interruption priority system.
TC Nos.: 4A27
Models: General Dynamics Corporation22 Series
ACO: Los Angeles ACO Branch, Tel: +1 (562) 627-5200

STC Holder: Northrop Corporation 1001 E. Broadway Ave, Hawthorne, CA 90250, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA357WE	Status: Current	App Date:	Rev Date: 01/01/1960
Description: Goodrich brake assembly 2-878 and wheel assembly 3-1112.
TC Nos.: 7A4
Models: Industrie Aeronautiche e MeccanicheP.166
ACO: AIR-770: West Certification Branch LA

STC Holder: Northrop Corporation 1001 E. Broadway Ave, Hawthorne, CA 90250, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA357WE	Status: Historical	App Date:	Rev Date:
Description: Goodrich brake assembly 2-878 and wheel assembly 3-1112.
TC Nos.: 7A4
Models: Industrie Aeronautiche e MeccanicheP.166
ACO: Los Angeles ACO Branch, Tel: +1 (562) 627-5200

STC Holder: Northrop Corporation 1001 E. Broadway Ave, Hawthorne, CA 90250, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4-1419	Status: Historical	App Date:	Rev Date:
Description: Exhaust muffler.
TC Nos.: 2H1, 2H3, H-1
Models: Bell Helicopter Textron47 Series, 47 Series, 47 Series
ACO: Los Angeles ACO Branch, Tel: +1 (562) 627-5200

STC Holder: Northrop Corporation 1001 E. Broadway Ave, Hawthorne, CA 90250, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4-1419	Status: Current	App Date:	Rev Date: 01/01/1960
Description: Exhaust muffler.
TC Nos.: 2H1, 2H3, H-1
Models: Bell Helicopter Textron47 Series, 47 Series, 47 Series
ACO: AIR-770: West Certification Branch LA

STC Holder: Northrop Corporation 1001 E. Broadway Ave, Hawthorne, CA 90250, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4-619	Status: Current	App Date:	Rev Date: 01/01/1960
Description: Exhaust muffler.
TC Nos.: 2H1, 2H3, H-1
Models: Bell Helicopter Textron47 Series, 47 Series, 47 Series
ACO: AIR-770: West Certification Branch LA

STC Holder: Northrop Corporation 1001 E. Broadway Ave, Hawthorne, CA 90250, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4-619	Status: Historical	App Date:	Rev Date:
Description: Exhaust muffler.
TC Nos.: 2H1, 2H3, H-1
Models: Bell Helicopter Textron47 Series, 47 Series, 47 Series
ACO: Los Angeles ACO Branch, Tel: +1 (562) 627-5200