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No. of STCs: 10

STC Holder: Twin Commander Aircraft Corporation 18933 59th Avenue N.E., Suite 115, Arlington, WA 98223, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA01762SE	Status: Historical	App Date: 12/01/2006	Rev Date: 11/12/2009
Description: Fabrication and Installation of Fuel Quantity Indication System.
TC Nos.: 2A4
Models: Twin Commander Aircraft Corporation690, 690A, 690B
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Twin Commander Aircraft Corporation 18933 59th Avenue N.E., Suite 115, Arlington, WA 98223, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA09247AC	Status: Historical	App Date: 08/14/1996	Rev Date: 11/09/2009
Description: Replace the engine exhaust ejector assembly, P/N 260042-55 LH &-56 RH,with a heavier gauge ejector which has a modified fairing.
TC Nos.: 2A4
Models: Twin Commander Aircraft Corporation690, 690A, 690B
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Twin Commander Aircraft Corporation 18933 59th Avenue N.E., Suite 115, Arlington, WA 98223, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA236CH	Status: Historical	App Date: 10/28/1993	Rev Date: 11/12/2009
Description: Installation of Allied Signal, Inc., (Garrett) TPE331-10T series engines (-512K, -515K, or -516K in the 690A and 690B; -511K or -513K in the 690C and 690D) and related changes.
TC Nos.: 2A4
Models: Twin Commander Aircraft Corporation690A, 690B, 690C, 690D
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Twin Commander Aircraft Corporation c/o PAC Holdings, 3220 100th St #E, Everett, WA 98204, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA260SW	Status: Historical	App Date: 06/05/1963	Rev Date: 05/26/2004
Description: Protective device in ground side of battery and external power relays.
TC Nos.: 2A4, 6A1
Models: Twin Commander Aircraft Corporation500, 500-A, 500-B, 520, 560, 560-A, 560-E, 680, 680-E, 680-F, 720
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Twin Commander Aircraft Corporation 18933 59th Avenue N.E., Suite 115, Arlington, WA 98223, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA260SW	Status: Historical	App Date: 06/05/1963	Rev Date: 11/12/2009
Description: Installation of a Protective Device in the ground side of the Battery and External Power relays
TC Nos.: 2A4, 6A1
Models: Twin Commander Aircraft Corporation500, 500-A, 500-B, 520, 560, 560-A, 560-E, 560-F, 680, 680-E, 680-F, 680-FL, 720
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Twin Commander Aircraft Corporation c/o PAC Holdings, 3220 100th St #E, Everett, WA 98204, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA546GL	Status: Historical	App Date: 06/29/1981	Rev Date: 05/26/2004
Description: Installation of Hartzell Model HC-B3TN-5FL/LT10673 or LT10673B propellers.
TC Nos.: 2A4
Models: Twin Commander Aircraft Corporation690, 690A, 690B
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Twin Commander Aircraft Corporation 18933 59th Avenue N.E., Suite 115, Arlington, WA 98223, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA546GL	Status: Historical	App Date: 06/29/1981	Rev Date: 11/12/2009
Description: Installation of Hartzell Model HC-B3TN-5FL/LT10673 or LT10673B propellers.
TC Nos.: 2A4
Models: Twin Commander Aircraft Corporation690, 690A, 690B
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Twin Commander Aircraft Corporation c/o PAC Holdings, 3220 100th St #E, Everett, WA 98204, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA710SW	Status: Historical	App Date: 02/16/1966	Rev Date: 05/26/2004
Description: Installation of United Aircraft of Canada Limited PT6A-20 engine.
TC Nos.: 2A4
Models: Twin Commander Aircraft Corporation680-T
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Twin Commander Aircraft Corporation 18933 59th Avenue N.E., Suite 115, Arlington, WA 98223, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA710SW	Status: Historical	App Date: 02/16/1966	Rev Date: 11/12/2009
Description: Installation of United Aircraft of Canada Limited PT6A-20 engine.
TC Nos.: 2A4
Models: Twin Commander Aircraft Corporation680-T
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Twin Commander Aircraft Corporation c/o PAC Holdings, 3220 100th St #E, Everett, WA 98204, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA710SW	Status: Historical	App Date: 02/16/1966	Rev Date: 05/26/2004
Description: Installation of United Aircraft of Canada Limited PT6A-20 engine.
TC Nos.: 2A4
Models: Twin Commander Aircraft Corporation680-T
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500