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: Vardax Mineral Systems 3025 Eldridge Avenue, Bellingham, WA 98225, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1361SO	Status: Historical	App Date:	Rev Date: 06/10/1986
Description: Replaces original reciprocating engines with Pratt & Whitney of Canada PT6A-135 turbopropeller engines and related changes.
TC Nos.: A7CE
Models: The Cessna Aircraft Company421C
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500