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No. of STCs: 12

STC Holder: A D Howard 6817 NW 43rd St, Bethany, OK 73008, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1072SW	Status: Current	App Date: 09/04/1969	Rev Date: 09/22/1969
Description: Installation of Universal camera.
TC Nos.: 2A4, 6A1
Models: Twin Commander Aircraft LLC500, 500-A, 500-B, 500-S, 500-U, 560-A, 560-E, 560-F, 680, 680-E, 680-F
ACO: AIR-760: Central Certification Branch FTW

STC Holder: A D Howard 6817 NW 43rd St, Bethany, OK 73008, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1122SW	Status: Current	App Date: 01/20/1970	Rev Date: 02/05/1970
Description: Installation of dual cameras and navigation sight
TC Nos.: 2A4, 6A1
Models: Twin Commander Aircraft LLC500, 500-A, 500-B, 500-S, 500-U, 560-A, 560-E, 560-F, 680, 680-E, 680-F
ACO: AIR-760: Central Certification Branch FTW

STC Holder: A D Howard 6817 NW 43rd St, Bethany, OK 73008, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1332SW	Status: Current	App Date: 06/09/1971	Rev Date: 06/24/1971
Description: Modification of fuselage for camera and navigation sight installation
TC Nos.: 2A4, 6A1
Models: Twin Commander Aircraft LLC500, 500-A, 500-B, 500-S, 500-U, 560, 560-A, 560-E, 560-F, 680, 680-E, 680-F
ACO: AIR-760: Central Certification Branch FTW

STC Holder: A D Howard 6817 NW 43rd St, Bethany, OK 73008, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1358SW	Status: Current	App Date: 08/15/1971	Rev Date: 04/25/1983
Description: Dual or single camera installation and navigation sights.
TC Nos.: 2A4
Models: Twin Commander Aircraft LLC680-FL, 680-FL(P)
ACO: AIR-760: Central Certification Branch FTW

STC Holder: A D Howard 6817 NW 43rd St, Bethany, OK 73008, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1529SW	Status: Current	App Date: 08/23/1972	Rev Date: 07/25/1973
Description: Modification of hydraulic system and air conditioning pressurization system.
TC Nos.: 2A4
Models: Twin Commander Aircraft LLC680-V, 680-W
ACO: AIR-760: Central Certification Branch FTW

STC Holder: A D Howard 6817 NW 43rd St, Bethany, OK 73008, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1530SW	Status: Current	App Date: 08/23/1972	Rev Date: 12/23/1972
Description: Modify existing 3000 psi hydraulic system to 1000 psi hydraulic system.
TC Nos.: 2A4
Models: Twin Commander Aircraft LLC680-V, 680-W
ACO: AIR-760: Central Certification Branch FTW

STC Holder: A D Howard Route 2, Box 4, Culdesac, ID 83524, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1584SW	Status: Historical	App Date:	Rev Date:
Description: Aerial survey camera.
TC Nos.: 2A4
Models: Twin Commander Aircraft Corporation680FL(P), 680T, 680V, 680W, 690
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: A D Howard 6817 NW 43rd St, Bethany, OK 73008, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1649SW	Status: Current	App Date: 04/04/1973	Rev Date: 05/01/1973
Description: Camera installation.
TC Nos.: 2A4
Models: Twin Commander Aircraft LLC680-FL, 685
ACO: AIR-760: Central Certification Branch FTW

STC Holder: A D Howard 717 6th Avenue, Lewiston, ID 83501, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1863SW	Status: Historical	App Date: 02/10/1974	Rev Date: 04/03/2006
Description: Installation of single and dual aerial survey cameras and navigation sights
TC Nos.: A25CE, A7CE
Models: Cessna Aircraft Company401, 401A, 401B, 402, 402A, 402B, 402C, 404, 411, 411A The Cessna Aircraft Company402
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: A D Howard 6817 NW 43rd St, Bethany, OK 73008, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1977SW	Status: Current	App Date: 04/21/1975	Rev Date: 05/06/1975
Description: Modification of fuselage for installation of doppler antenna.
TC Nos.: 2A4
Models: Twin Commander Aircraft LLC680-FL, 680-FL(P), 680-T, 680-V, 680-W, 681, 685, 690, 690A
ACO: AIR-760: Central Certification Branch FTW

STC Holder: A D Howard 1911 Moulton Court, Oklahoma City, OK 73127, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2333SW	Status: Current	App Date: 06/28/1976	Rev Date: 11/20/1978
Description: Installation of fiberglass tailcone for magnetometer.
TC Nos.: A7CE
Models: Cessna Aircraft Company402, 402A, 402B
ACO: AIR-760: Central Certification Branch FTW

STC Holder: A D Howard PO Box 32537, Oklahoma City, OK 73123, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA7837SW	Status: Historical	App Date: 08/11/1989	Rev Date: 06/26/1990
Description: Structural provisions for camera and navigation sight.
TC Nos.: 2A4
Models: Twin Commander Aircraft Corporation690D, 695A, 695B
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140