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: 6

STC Holder: Cascade STC LLC 4824 S 283rd Place, Auburn, WA 98001, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4344NM	Status: Current	App Date: 07/26/1988	Rev Date: 12/22/2015
Description: Replace existing fiberglass strut leg fairings with aluminum fairings
TC Nos.: H3WE
Models: MD Helicopters Inc.369, 369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N
ACO: AIR-770: West Certification Branch SEA

STC Holder: Cascade STC LLC 8500 Perimeter Road S., Seattle, WA 98108, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4344NM	Status: Historical	App Date: 07/26/1988	Rev Date: 04/09/2014
Description: Replace existing fiberglass strut leg fairings with aluminum fairings
TC Nos.: H3WE
Models: MD Helicopters Inc.369, 369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Cascade STC LLC 4824 S 283rd Place, Auburn, WA 98001, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4909NM	Status: Current	App Date: 12/11/1989	Rev Date: 12/22/2015
Description: Replace the aft engine compartment heat blanket with a stainless steel firewall.
TC Nos.: H3WE
Models: MD Helicopters Inc.369, 369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N, 600N
ACO: AIR-770: West Certification Branch SEA

STC Holder: Cascade STC LLC 8500 Perimeter Road S., Seattle, WA 98108, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH4909NM	Status: Historical	App Date: 12/11/1989	Rev Date: 04/09/2014
Description: Replace the aft engine compartment heat blanket with a stainless steel firewall.
TC Nos.: H3WE
Models: MD Helicopters Inc.369, 369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N, 600N
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Cascade STC LLC 4824 S 283rd Place, Auburn, WA 98001, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00197SE	Status: Current	App Date: 04/12/1995	Rev Date: 12/22/2015
Description: Addition of strug leg fairings to landing gear.
TC Nos.: H10WE
Models: Robinson Helicopter CompanyR22, R22 ALPHA, R22 BETA, R22 MARINER
ACO: AIR-770: West Certification Branch SEA

STC Holder: Cascade STC LLC 8500 Perimeter Road S., Seattle, WA 98108, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SR00197SE	Status: Historical	App Date: 04/12/1995	Rev Date: 04/09/2014
Description: Addition of strug leg fairings to landing gear.
TC Nos.: H10WE
Models: Robinson Helicopter CompanyR22, R22 ALPHA, R22 BETA, R22 MARINER
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500