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: Mid Cal Dusters P.O. Box 97, Selma, CA 93662, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4172WE	Status: Current	App Date: 06/05/1979	Rev Date: 03/18/1999
Description: Installation of Hamilton Standard 3D40-209 hub with 6101A-18 propeller blades.
TC Nos.: A9SW
Models: Air Tractor Inc.AT-301
ACO: AIR-770: West Certification Branch LA