The STC search system is a complimentary service provided to the aviation community. We hope you find it useful. Our primary product is a comprehensive library of aviation regulations and standards, including tools for generating Airworthiness Directive compliance reports.

No. of STCs: 21

STC Holder: Basler Turbo Conversions Inc P.O. Box 2305, Oshkosh, WI 54903-2305		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1253GL	Status: Current	App Date: 06/26/1987	Rev Date: 08/16/1994
Description: Install auxiliary cargo door.
TC Nos.: A-669
Models: McDonnell Douglas CorporationDC3A-S4C4G, DC3C-R-1830-90C (Army C-47B), DC3C-R-1830-90C (Navy R4D-6), DC3C-S1C3G, DC3C-SC3G, DC3D-R-1830-90C (Army C-117A)
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc 255 West 35th Avenue, Oshkosh, WI 54903-2305		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1734GL	Status: Current	App Date: 10/25/1991	Rev Date: 08/16/1994
Description: Installation of freon air conditioning system.
TC Nos.: A-669
Models: McDonnell Douglas CorporationDC3A-S1C3G, DC3A-S4C4G, DC3A-SC3G, DC3D-R-1830-90C (Army C-117A)
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc P.O. Box 2305, Oshkosh, WI 54903-2305		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1756GL	Status: Current	App Date: 11/18/1991	Rev Date: 08/16/1994
Description: Install cargo winch system.
TC Nos.: A-669
Models: McDonnell Douglas CorporationDC3A-S1C3G, DC3A-S4C4G, DC3A-SC3G, DC3C-R-1830-90C (Army C-47B), DC3C-R-1830-90C (Navy R4D-6)
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc 255 West 35th Avenue, Oshkosh, WI 54901, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2-438	Status: Historical	App Date: 12/13/1956	Rev Date: 08/18/1994
Description: Installation of mid-range long range outer wing tanks, with or without dump chutes.
TC Nos.: 2-576, A-618
Models: Douglas Aircraft Co. Inc.Army B-23 McDonnell Douglas CorporationDC-3 Series
ACO: Chicago ACO Branch, Tel: +1 (847) 294-7358

STC Holder: Basler Turbo Conversions Inc 255 W. 35th Avenue, Oshkosh, WI 54903, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4840NM	Status: Historical	App Date: 04/18/1988	Rev Date: 11/20/2012
Description: Installation of Pratt & Whitney of Canada PT6A-67R engines, Hartzell HC-B5MA-3/M11276 propellers, modified fuel system, revised electrical system, and forward fuselage extension.
TC Nos.: A-669
Models: The Boeing CompanyDC3C-R-1830-90C, DC3C-S1C3G, DC3C-S4C4G, DC3C-SC3G
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc 255 W. 35th Avenue, Oshkosh, WI 54903		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4840NM	Status: Current	App Date: 04/18/1988	Rev Date: 08/21/2015
Description: lnstallation of Pratt & Whitney of Canada PT6A-67R engines, Hartzell HC-B5MA-3/Ml 1276 or HC-B5MA-3( )/Ml 1691N, K model propellers, modified fuel system, revised electrical system, and forward fuselage extension
TC Nos.: A-669
Models: The Boeing CompanyDC3C-R-1830-90C, DC3C-S1C3G, DC3C-S4C4G, DC3C-SC3G
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc P.O. Box 2305, Oshkosh, WI 54903-2305		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA996GL	Status: Current	App Date: 12/27/1984	Rev Date: 06/01/1994
Description: Install aluminum skin on control surfaces.
TC Nos.: A-669
Models: McDonnell Douglas CorporationDC3A-S1C3G, DC3A-S1CG, DC3A-SC3G, DC3A-SCG, DC3C-R-1830-90C (Army C-47B), DC3C-R-1830-90C (Navy R4D-6), DC3C-S4C4G, DC3C-SC3G
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc 255 W. 35th Ave., Oshkosh, WI 54903, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST00435DE	Status: Current	App Date: 09/21/2000	Rev Date: 10/19/2007
Description: Reconfigure aircraft to a maximum seating of 19 passengers.
TC Nos.: A-669
Models: McDonnell Douglas CorporationDC3C-SC3G
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc 255 West 35th Avenue, Oshkosh, WI 54903-2305		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST01796CH	Status: Current	App Date: 03/13/2002	Rev Date: 03/17/2003
Description: Install geared aileron per Basler Turbon Conversions LLC Drawing 25703 latest FAA approved revision, and Design Change Notice D-1 latest FAA approved revisions.
TC Nos.: A-669
Models: McDonnell Douglas CorporationDC3C-S1C3G, DC3C-S4C4G, DC3C-SC3G, DC3D-R-1830-90C
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc 255 W. 35th Ave., Oshkosh, WI 54903, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST03295CH	Status: Current	App Date: 11/15/2013	Rev Date: 07/11/2016
Description: Installation of a Traffic Collision Avoidance (TCAS II) System
TC Nos.: A-669
Models: The Boeing CompanyDC3A-S1C3G, DC3A-S1CG, DC3A-S4C4G, DC3A-SC3G, DC3A-SCG, DC3C-R-1830-90C, DC3C-S1C3G, DC3C-S4C4G, DC3C-SC3G, DC3D-R-1830-90C
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc 255 W. 35th Ave., Oshkosh, WI 54903, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST03296CH	Status: Current	App Date: 11/26/2013	Rev Date: 07/06/2016
Description: Installation of a Digital Flight Data Recorder (DFDR) System
TC Nos.: A-669
Models: The Boeing CompanyDC3A-S1C3G, DC3A-S1CG, DC3A-S4C4G, DC3A-SC3G, DC3A-SCG, DC3C-R-1830-90C, DC3C-S1C3G, DC3C-S4C4G, DC3C-SC3G, DC3D-R-1830-90C
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc 255 West 35th Avenue, Oshkosh, WI 54903		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST03318CH	Status: Current	App Date: 02/04/2014	Rev Date: 02/21/2022
Description: Installation of an EO/IR System
TC Nos.: A-669
Models: The Boeing CompanyDC3A-S1C3G, DC3A-S1CG, DC3A-S4C4G, DC3A-SC3G, DC3A-SCG, DC3C-R-1830-90C, DC3C-S1C3G, DC3C-S4C4G, DC3C-SC3G, DC3D-R-1830-90C
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc 255 West 35th Avenue, Oshkosh, WI 54903, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST03318CH	Status: Historical	App Date: 02/04/2014	Rev Date: 08/01/2016
Description: Installation of a Forward Looking Infrared (FLIR) System
TC Nos.: A-669
Models: The Boeing CompanyDC3A-S1C3G, DC3A-S1CG, DC3A-S4C4G, DC3A-SC3G, DC3A-SCG, DC3C-R-1830-90C, DC3C-S1C3G, DC3C-S4C4G, DC3C-SC3G, DC3D-R-1830-90C
ACO: Chicago ACO Branch, Tel: +1 (847) 294-7358

STC Holder: Basler Turbo Conversions Inc 255 West 35th Avenue, Oshkosh, WI 54903, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST03318CH	Status: Historical	App Date: 02/04/2014	Rev Date: 02/17/2022
Description: Installation of a Forward Looking Infrared (FLIR) System
TC Nos.: A-669
Models: The Boeing CompanyDC3A-S1C3G, DC3A-S1CG, DC3A-S4C4G, DC3A-SC3G, DC3A-SCG, DC3C-R-1830-90C, DC3C-S1C3G, DC3C-S4C4G, DC3C-SC3G, DC3D-R-1830-90C
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc 255 W. 35th Ave., Oshkosh, WI 54901, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST04223CH	Status: Current	App Date: 05/18/2017	Rev Date: 02/06/2018
Description: Installation of Provisions for a Light Detection and Ranging (LIDAR) System
TC Nos.: A-669
Models: The Boeing CompanyDC3A-S1C3G, DC3A-S1CG, DC3A-S4C4G, DC3A-SC3G, DC3A-SCG, DC3C-R-1830-90C, DC3C-S1C3G, DC3C-S4C4G, DC3C-SC3G, DC3D-R-1830-90C
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc 255 West 35th Avenue, Oshkosh, WI 54903		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST04308CH	Status: Current	App Date: 02/05/2018	Rev Date: 09/21/2023
Description: Installation of Underside Roller Doors
TC Nos.: A-669
Models: The Boeing CompanyDC3A-SC3G, DC3C-R-1830-90C, DC3C-S1C3G, DC3C-S4C4G
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc 225 W. 35th Ave., Oshkosh, WI 54902		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST04350CH	Status: Current	App Date: 09/04/2018	Rev Date: 11/12/2024
Description: Installation of an S-Tec Autopilot System
TC Nos.: A-669
Models: The Boeing CompanyDC3C-R-1830-90C, DC3C-S1C3G, DC3C-S4C4G, DC3C-SC3G
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc 255 West 35th Avenue, Oshkosh, WI 54903-2305		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST173CH	Status: Current	App Date: 01/07/1993	Rev Date: 08/16/1994
Description: Installation of cockpit blower system. (DC-3 SERIES -TP67 turbine conversion per STC SA 4840NM)
TC Nos.: A-669
Models: McDonnell Douglas CorporationDC-3 Series
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc P.O. Box 2305, Oshkosh, WI 54903-2305		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST294CH	Status: Current	App Date: 12/06/1994	Rev Date: 02/09/1995
Description: Limit maximum payload capacity to7500 lbs. maximum.
TC Nos.: A-669
Models: McDonnell Douglas CorporationDC3C-R-1830-90C (Army C-47B), DC3C-R-1830-90C (Navy R4D-6), DC3C-S1C3G, DC3C-S4C4G, DC3C-SC3G
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc P.O. Box 2305, Oshkosh, WI 54903-2305		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST302CH	Status: Current	App Date: 12/20/1994	Rev Date: 02/24/1995
Description: Installation of flight crew restraints.
TC Nos.: A-669
Models: McDonnell Douglas CorporationDC-3C Series
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Basler Turbo Conversions Inc 255 West 35th Avenue, Oshkosh, WI 54903-2305		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST8CH	Status: Current	App Date: 09/14/1992	Rev Date: 08/16/1994
Description: Installation of supplemental oxygen system. (DC-3C SERIES -TP67 turbine conversion per STC SA 4840NM)
TC Nos.: A-669
Models: McDonnell Douglas CorporationDC-3C Series
ACO: AIR-760: Central Certification Branch CHI