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: 2

STC Holder: Aeronautical Testing Service P.O. Box 1490, Friday Harbor, WA 98250, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4301NM	Status: Current	App Date: 01/04/1988	Rev Date: 04/15/1988
Description: Installation of a one to nine passenger configuration.
TC Nos.: A-815
Models: Viking Air LimitedDHC-3
ACO: AIR-770: West Certification Branch SEA

STC Holder: Aeronautical Testing Service P.O. Box 1490, Friday Harbor, WA 98250, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5198NM	Status: Current	App Date: 04/08/1991	Rev Date: 06/21/1993
Description: Installation of vortex gnerators on the wing and vertical tail and a5% increase in takeoff weight.
TC Nos.: 3A25
Models: Cessna Aircraft Company335, 340, 340A
ACO: AIR-770: West Certification Branch SEA