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: Walter E. Heller and Company 210 West Seventh St, Los Angeles, CA 90014, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1612WE	Status: Current	App Date: 02/21/1968	Rev Date: 02/21/1968
Description: Installation of Hamilton Standard Hydromatic Full Feathering Propellers 22D30-213/6533A-12, Propeller feather system, BT-13 oil cooler and cowling and modified oil tank.
TC Nos.: TC 551
Models: Lockheed Aircraft CorporationElectra 10-A (Army UC-36A; Navy R-20; and XR-20-1)
ACO: AIR-770: West Certification Branch LA