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: 1

STC Holder: Aetna Helicopters Inc Unknown, Etna, CA 96027, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4-235	Status: Current	App Date: 05/29/1957	Rev Date: 06/28/1957
Description: Installed Franklin model 6V-335-A engine restricted to 200 hp.
TC Nos.: H-1
Models: Scotts-Bell 47 Inc47G
ACO: AIR-770: West Certification Branch LA