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No. of STCs: 30

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE769NW	Status: Historical	App Date: 03/14/1979	Rev Date: 08/19/2005
Description: Installation of Soloy Part No. 250-1001-1 fuel line.
TC Nos.: E4CE
Models: Allison Engine Company Inc.250-C18, 250-C20, 250-C20B
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE769NW	Status: Current	App Date: 03/14/1979	Rev Date: 04/15/2009
Description: Installation of Soloy Part No. 250-1001-1 fuel line.
TC Nos.: E4CE
Models: Allison Engine Company Inc.250-C18, 250-C20, 250-C20B
ACO: AIR-770: West Certification Branch SEA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH177WE	Status: Current	App Date: 11/27/1967	Rev Date: 05/13/2005
Description: Installation of Allison 250-C20/250-C20B engine and related changes.
TC Nos.: 4H10
Models: Hiller AviationUH-12D (Army UH-23D)
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH178WE	Status: Current	App Date: 11/27/1967	Rev Date: 08/19/2005
Description: Installation of Allison 250-C20/250-C20B engine and related changes. (UH-12E-L (4 place))
TC Nos.: 4H11
Models: Hiller Aircraft CorporationUH-12E, UH-12E-L
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH247NW	Status: Current	App Date: 10/30/1975	Rev Date: 08/19/2005
Description: Installation and maintenance of exhaust ejector engine oil cooler system. (UH-12D (ARMY UH-23D modified per STC SH177WE)
TC Nos.: 4H10
Models: Hiller AviationUH-12D (Army UH-23D)
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH248NW	Status: Current	App Date: 10/30/1975	Rev Date: 08/19/2005
Description: Installation and maintenance of exhaust ejector engine oil cooler system. (UH-12E modified per STC SH178WE)
TC Nos.: 4H11
Models: Rogerson Hiller CorporationUH-12E
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH287NW	Status: Current	App Date: 02/24/1976	Rev Date: 05/13/2005
Description: Installation of Hiller landing gear float kit No. 44012. (UH-12d (ARMY UH-23D modified per STC SH177WE)
TC Nos.: 4H10
Models: Hiller AviationUH-12D (Army UH-23D)
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH288NW	Status: Current	App Date: 02/24/1976	Rev Date: 08/19/2005
Description: Installation of Hiller landing gear float kit No. 44012. (UH-12E modified per STC SH178WE)
TC Nos.: 4H11
Models: Rogerson Hiller CorporationUH-12E
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH295NW	Status: Current	App Date: 03/15/1976	Rev Date: 08/19/2005
Description: Installation of Hiller auxiliary fuel tanks kit No 72041. (UH-12D (ARMY UH-23D) modified per STC SH177WE)
TC Nos.: 4H10
Models: Hiller AviationUH-12D (Army UH-23D)
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH296NW	Status: Current	App Date: 03/15/1976	Rev Date: 08/19/2005
Description: Installation of Hiller auxiliary fuel tanks kit No. 72041. (UH-12E modified per STC SH178WE)
TC Nos.: 4H11
Models: Rogerson Hiller CorporationUH-12E
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH297NW	Status: Current	App Date: 03/11/1976	Rev Date: 08/19/2005
Description: Installation and maintenance of a cabin heater system. (UH-12D (ARMY UH-23D modified per STC SH178WE)
TC Nos.: 4H10
Models: Hiller AviationUH-12D (Army UH-23D)
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH298NW	Status: Current	App Date: 03/11/1976	Rev Date: 08/19/2005
Description: Installation and maintenance of a cabin heater system. (UH-12E modified per STC SH178WE)
TC Nos.: 4H11
Models: Rogerson Hiller CorporationUH-12E
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH299NW	Status: Current	App Date: 01/08/1976	Rev Date: 08/19/2005
Description: Installation of Soloy cargo racks.
TC Nos.: 4H10
Models: Hiller AviationUH-12D (Army UH-23D)
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH300NW	Status: Current	App Date: 01/08/1976	Rev Date: 08/19/2005
Description: Installation of Soloy cargo racks.
TC Nos.: 4H11
Models: Rogerson Hiller CorporationUH-12E
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH321NW	Status: Current	App Date: 05/17/1976	Rev Date: 08/19/2005
Description: Installation of a Bendix fuel control/power governor system on the Allison 250-C20 turbine powered Hiller UH-12D rotorcraft. (UH-12D (ARMY UH-23D) modified per STC SH177WE)
TC Nos.: 4H10
Models: Hiller AviationUH-12D (Army UH-23D)
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH322NW	Status: Current	App Date: 05/17/1976	Rev Date: 08/19/2005
Description: Installation of a Bendix fuel control/power governor system on the Allison 250-C20 turbine powered Hiller UH-12E rotorcraft. (UH-12E modified per STC SH178WE)
TC Nos.: 4H11
Models: Rogerson Hiller CorporationUH-12E
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH338NW	Status: Current	App Date: 07/22/1976	Rev Date: 08/19/2005
Description: Installation of transmission oil cooling system on the Allison250-C20 turbine powered Hiller UH-12D rotorcraft. (UH-12D (ARMY UH-23D modified per STC SH177WE)
TC Nos.: 4H10
Models: Hiller AviationUH-12D (Army UH-23D)
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH339NW	Status: Current	App Date: 07/22/1976	Rev Date: 08/19/2005
Description: Installation of transmission oil cooling system on the Allison250-C20 turbine powered Hiller UH-12E rotorcraft. (UH-12E modified per STC SH178WE)
TC Nos.: 4H11
Models: Rogerson Hiller CorporationUH-12E
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH380NW	Status: Current	App Date: 02/24/1976	Rev Date: 08/19/2005
Description: Installation and maintenance of engine auto reignition system. (UH-12D (ARMY UH-23D) modified per STC SH177WE)
TC Nos.: 4H10
Models: Hiller AviationUH-12D (Army UH-23D)
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH381NW	Status: Current	App Date: 02/24/1976	Rev Date: 04/15/2009
Description: Installation and maintenance of engine auto reignition system. (UH-12E modified per STC SH178WE)
TC Nos.: 4H11
Models: Hiller Aircraft CorporationUH-12E
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH475NW	Status: Current	App Date: 08/06/1976	Rev Date: 05/13/2005
Description: Installation of an agricultural spray system. (UH-12D (ARMY UH-23D) modifier per STC)
TC Nos.: 4H10
Models: Hiller AviationUH-12D (Army UH-23D)
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH476NW	Status: Current	App Date: 08/06/1976	Rev Date: 04/15/2009
Description: Installation of an agricultural spray system.
TC Nos.: 4H11
Models: Rogerson Hiller CorporationUH-12E
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH505NW	Status: Current	App Date: 07/14/1977	Rev Date: 08/19/2005
Description: Installation of cargo release pedal.
TC Nos.: 4H10
Models: Hiller AviationUH-12D (Army UH-23D)
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH506NW	Status: Current	App Date: 07/14/1977	Rev Date: 08/19/2005
Description: Installation of cargo release pedal.
TC Nos.: 4H11
Models: Rogerson Hiller CorporationUH-12E
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH559NW	Status: Current	App Date: 07/11/1977	Rev Date: 08/19/2005
Description: Installation and maintenance of engine inlet air cleaner system. (UH-12D (ARMY UH-23D) modified per STC SH177WE)
TC Nos.: 4H10
Models: Hiller AviationUH-12D (Army UH-23D)
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH560NW	Status: Current	App Date: 07/11/1977	Rev Date: 08/19/2005
Description: Installation and maintenance of engine inlet air cleaner system.
TC Nos.: 4H11
Models: Rogerson Hiller CorporationUH-12E
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH634NW	Status: Current	App Date: 04/06/1978	Rev Date: 08/19/2005
Description: Installation of Tundra Pads.
TC Nos.: 4H11
Models: Rogerson Hiller CorporationUH-12E
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH657NW	Status: Current	App Date: 11/11/1974	Rev Date: 05/15/2009
Description: Installation of Allison 250-C18A, -C18C, -C20, -C20B engine and related changes.
TC Nos.: 2H3
Models: Bell Helicopter Textron47G-2A, 47G-2A-1, 47G-3B, 47G-3B-1, 47G-3B-2, 47G-3B-2A, 47G-4, 47G-4A, 47G-5, 47G-5A
ACO: AIR-770: West Certification Branch LA

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH657NW	Status: Historical	App Date: 11/11/1974	Rev Date: 08/19/2005
Description: Installation of Allison 250-C18A, -C18C, -C20, -C20B engine and related changes.
TC Nos.: 2H3
Models: Bell Helicopter Textron47G-2A, 47G-2A-1, 47G-3B, 47G-3B-1, 47G-3B-2, 47G-3B-2A, 47G-4, 47G-4A, 47G-5, 47G-5A
ACO: Los Angeles ACO Branch, Tel: +1 (562) 627-5200

STC Holder: Siam Hiller Holdings Inc 925 M Street, Firebaugh, CA 93622, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH657NW	Status: Historical	App Date: 11/11/1974	Rev Date: 04/15/2009
Description: Installation of Allison 250-C18A, -C18C, -C20, -C20B engine and related changes.
TC Nos.: 2H3
Models: Bell Helicopter Textron47G-2A, 47G-2A-1, 47G-3B, 47G-3B-1, 47G-3B-2, 47G-3B-2A, 47G-4, 47G-4A, 47G-5, 47G-5A
ACO: Los Angeles ACO Branch, Tel: +1 (562) 627-5200