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: Helitec Corporation 4930 East Falcon Drive, Mesa, AZ 85205, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH271WE	Status: Current	App Date:	Rev Date: 04/29/1980
Description: Installation of cabin-mounted spray tank and external spray booms for agricultural purposes.
TC Nos.: 1H4
Models: Sikorsky Aircraft CorporationS-55, S-55B, S-55C
ACO: AIR-770: West Certification Branch LA