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No. of STCs: 22

STC Holder: Western Skyways Aircraft Modifications Inc. 333 West Boulevard, # 400, Rapid City, SD 57701		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA04211CH	Status: Current	App Date: 09/25/2016	Rev Date: 08/20/2025
Description: Installation of an engine modified per STC SE0417CH
TC Nos.: 3A21, A16CE, A4CE
Models: Textron Aviation Inc.206, 207, 207A, 210D, 210E, 210F, 210G, 210H, 210J, 210K, 210L, 210M, 210N, 210R, P206, P206A, P206B, P206C, P206D, P206E, T207, T207A, T210F, T210G, T210H, T210J, T210K, T210L, T210M, T210N, TP206A, TP206B, TP206C, TP206D, TP206E, TU206A, TU206B, TU206C, TU206D, TU206E, TU206F, TU206G, U206, U206A, U206B, U206C, U206D, U206E, U206F, U206G
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Western Skyways Aircraft Modifications Inc. 140 Industrial Drive, Burlington, WI 53105, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2528NM	Status: Historical	App Date: 01/24/1984	Rev Date: 05/20/2019
Description: Installation of an air to air intercooler in the engine induction system downstream of the turbocharger. (P210N S/N P21000001 THRU P21000834)
TC Nos.: 3A21
Models: The Cessna Aircraft CompanyP210N
ACO: AIR-7C0: Chicago ACO Branch

STC Holder: Western Skyways Aircraft Modifications Inc. 140 Industrial Drive, Burlington, WI 53105, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2528NM	Status: Current	App Date: 01/24/1984	Rev Date: 03/08/2023
Description: Installation of an air to air intercooler in the engine induction system downstream of the turbocharger. (P210N S/N P21000001 THRU P21000834)
TC Nos.: 3A21
Models: Textron Aviation Inc.P210N
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Western Skyways Aircraft Modifications Inc. 333 West Boulevard, Suite 400, Rapid City, SD 57701		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2598NM	Status: Current	App Date: 10/01/1984	Rev Date: 03/08/2023
Description: Installation of an air to air intercooler in the engine induction system downstream of the turbocharger. (See specific serial numbers) H S/N T210-308 THRU T210-0392)
TC Nos.: 3A21
Models: Textron Aviation Inc.T210G, T210H, T210J, T210K, T210L, T210M, T210N
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Western Skyways Aircraft Modifications Inc. 140 Industrial Drive, Burlington, WI 53105, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2598NM	Status: Historical	App Date: 10/01/1984	Rev Date: 05/20/2019
Description: Installation of an air to air intercooler in the engine induction system downstream of the turbocharger. (See specific serial numbers) H S/N T210-308 THRU T210-0392)
TC Nos.: 3A21
Models: The Cessna Aircraft CompanyT210G, T210H, T210J, T210K, T210L, T210M, T210N
ACO: AIR-7C0: Chicago ACO Branch

STC Holder: Western Skyways Aircraft Modifications Inc. 140 Industrial Drive, Burlington, WI 53105, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA3247NM	Status: Historical	App Date: 01/02/1986	Rev Date: 05/20/2019
Description: Installation of an air to air intercooler in the engine induction system downstream of the turbocharger. (TU206G S/N U20603522 thru U20606921 and up)
TC Nos.: A4CE
Models: The Cessna Aircraft CompanyTU206G
ACO: AIR-7C0: Chicago ACO Branch

STC Holder: Western Skyways Aircraft Modifications Inc. 333 West Boulevard, Suite 400, Rapid City, SD, 57701		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA3247NM	Status: Current	App Date: 01/02/1986	Rev Date: 02/20/2024
Description: Installation of an air to air intercooler in the engine induction system downstream of the turbocharger. (TU206G S/N U20603522 thru U20606921 and up)
TC Nos.: A4CE
Models: Textron Aviation Inc.TU206A, TU206D, TU206E, TU206F, TU206G
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Western Skyways Aircraft Modifications Inc. 140 Industrial Drive, Burlington, WI 53105, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA3781NM	Status: Historical	App Date: 02/01/1988	Rev Date: 05/20/2019
Description: Installation of engine induction air intercooler.
TC Nos.: A16CE
Models: The Cessna Aircraft CompanyT207A
ACO: AIR-7C0: Chicago ACO Branch

STC Holder: Western Skyways Aircraft Modifications Inc. 333 West Boulevard, Suite 400, Rapid City, SD 57701		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA3781NM	Status: Current	App Date: 02/01/1988	Rev Date: 03/08/2023
Description: Installation of engine induction air intercooler.
TC Nos.: A16CE
Models: Textron Aviation Inc.T207A
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Western Skyways Aircraft Modifications Inc. 333 West Boulevard, Suite 400, Rapid City, SD 57701		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA3931NM	Status: Current	App Date: 03/22/1988	Rev Date: 03/08/2023
Description: Installation of air to air intercooler in the engine air induction system. Airplane must have STC SA2689SW incorporated.
TC Nos.: 3A21
Models: Textron Aviation Inc.T210L
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Western Skyways Aircraft Modifications Inc. 140 Industrial Drive, Burlington, WI 53105, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA3931NM	Status: Historical	App Date: 03/22/1988	Rev Date: 05/20/2019
Description: Installation of air to air intercooler in the engine air induction system.
TC Nos.: 3A21
Models: Cessna Aircraft CompanyT210L
ACO: AIR-7C0: Chicago ACO Branch

STC Holder: Western Skyways Aircraft Modifications Inc. 140 Industrial Drive, Burlington, WI 53105, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE0417CH	Status: Current	App Date: 09/25/2016	Rev Date: 10/22/2019
Description: Turbo-normalization
TC Nos.: E3SO, E5CE, E8CE
Models: Continental MotorsIO-520-A, IO-520-F, IO-520-J, IO-520-L, IO-550-F, IO-550-L Continental Motors IncTSIO-520-C, TSIO-520-G, TSIO-520-H, TSIO-520-M, TSIO-520-R
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Western Skyways Aircraft Modifications Inc. 140 Industrial Drive, Burlington, WI 53105, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE2529NM	Status: Historical	App Date: 04/30/1984	Rev Date: 05/20/2019
Description: Installation of an air to air intercooler in the engine induction system downstream of the turbocharger.
TC Nos.: E8CE
Models: Teledyne Continental MotorsTSIO-520-AF, TSIO-520-P
ACO: AIR-7C0: Chicago ACO Branch

STC Holder: Western Skyways Aircraft Modifications Inc. 333 West Boulevard, Suite 400, Rapid City, SD 57701		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE2529NM	Status: Current	App Date: 04/30/1984	Rev Date: 03/08/2023
Description: Installation of an air to air intercooler in the engine induction system downstream of the turbocharger.
TC Nos.: E8CE
Models: Continental Aerospace Technologies Inc.TSIO-520-AF, TSIO-520-P
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Western Skyways Aircraft Modifications Inc. 333 West Boulevard, Suite 400, Rapid City, SD 57701		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE2599NM	Status: Current	App Date: 10/01/1984	Rev Date: 03/08/2023
Description: Installation of an air intercooler in the engine induction system downstream of the turbocharger.
TC Nos.: E8CE
Models: Continental Aerospace Technologies Inc.TSIO-520-C, TSIO-520-H, TSIO-520-R
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Western Skyways Aircraft Modifications Inc. 140 Industrial Drive, Burlington, WI 53105, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE2599NM	Status: Historical	App Date: 10/01/1984	Rev Date: 05/20/2019
Description: Installation of an air intercooler in the engine induction system downstream of the turbocharger.
TC Nos.: E8CE
Models: Teledyne Continental MotorsTSIO-520-C, TSIO-520-H, TSIO-520-R
ACO: AIR-7C0: Chicago ACO Branch

STC Holder: Western Skyways Aircraft Modifications Inc. 140 Industrial Drive, Burlington, WI 53105, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE3248NM	Status: Historical	App Date: 01/02/1986	Rev Date: 05/20/2019
Description: Installation of air to air intercooler in engine induction system.
TC Nos.: E8CE
Models: Teledyne Continental MotorsTSIO-520-M
ACO: AIR-7C0: Chicago ACO Branch

STC Holder: Western Skyways Aircraft Modifications Inc. 333 West Boulevard, Suite 400, Rapid City, SD 57701		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE3248NM	Status: Current	App Date: 01/02/1986	Rev Date: 02/20/2024
Description: Installation of air to air intercooler in engine induction system.
TC Nos.: E8CE
Models: Teledyne Continental MotorsTSIO-520-C, TSIO-520-M
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Western Skyways Aircraft Modifications Inc. 333 West Boulevard, Suite 400, Rapid City, SD 57701		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE3782NM	Status: Current	App Date: 02/01/1988	Rev Date: 03/08/2023
Description: Installation of an intercooler in the engine air induction system.
TC Nos.: E8CE
Models: Continental Aerospace Technologies Inc.TSIO-520-M
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Western Skyways Aircraft Modifications Inc. 140 Industrial Drive, Burlington, WI 53105, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE3782NM	Status: Historical	App Date: 02/01/1988	Rev Date: 05/20/2019
Description: Installation of an intercooler in the engine air induction system.
TC Nos.: E8CE
Models: Teledyne Continental MotorsTSIO-520-M
ACO: AIR-7C0: Chicago ACO Branch

STC Holder: Western Skyways Aircraft Modifications Inc. 333 West Boulevard, Suite 400, Rapid City, SD 57701		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE3932NM	Status: Current	App Date: 03/22/1988	Rev Date: 03/08/2023
Description: Installation of an intercooler in the engine air induction system.
TC Nos.: E8CE
Models: Continental Aerospace Technologies Inc.TSIO-520-R
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Western Skyways Aircraft Modifications Inc. 140 Industrial Drive, Burlington, WI 53105, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE3932NM	Status: Historical	App Date: 03/22/1988	Rev Date: 05/20/2019
Description: Installation of an intercooler in the engine air induction system.
TC Nos.: E8CE
Models: Continental Motors IncTSIO-520-R
ACO: AIR-7C0: Chicago ACO Branch