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: Cook William H 875 S.E. Shouland Dr., Bellevue, WA 98004, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2561WE	Status: Current	App Date: 04/25/1972	Rev Date: 06/30/1972
Description: Installation of modifications
TC Nos.: 1A2
Models: Piper Aircraft Inc.PA-18-125 (Army L-21A)
ACO: AIR-770: West Certification Branch SEA

STC Holder: Cook William H 875 S.E. Shouland Dr., Bellevue, WA 98004, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4160NM	Status: Current	App Date: 12/01/1987	Rev Date: 03/17/1988
Description: Modification to delete EDO P/N 088A2119 ventral fin assembly.
TC Nos.: 1A2
Models: Piper Aircraft Inc.PA-18-125 (Army L-21A)
ACO: AIR-770: West Certification Branch SEA