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No. of STCs: 5

STC Holder: Southern Ohio Avn Co P.O. Box 367, Vandalia, OH 45371, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1-142	Status: Current	App Date:	Rev Date:
Description: Modified ARC A13-B antenna.
TC Nos.: 2A4, 6A1
Models: Twin Commander Aircraft Corporation500, 560, 680
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Southern Ohio Avn Co 10600 Springboro Pike, Miamisburg, OH 45342, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1-445	Status: Current	App Date:	Rev Date:
Description: ARC Type A13-B VHF navigational antenna on vertical fin.
TC Nos.: 2A4, 6A1
Models: Twin Commander Aircraft Corporation500, 560, 680
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Southern Ohio Avn Co P.O. Box 367, Vandalia, OH 45371, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1-83	Status: Current	App Date:	Rev Date: 01/01/1960
Description: Camera in fuselage tail section.
TC Nos.: 2A4
Models: Twin Commander Aircraft Corporation600 Series
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Southern Ohio Avn Co 10600 Springboro Pike, Miamisburg, OH 45342, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA358EA	Status: Historical	App Date:	Rev Date:
Description: Increased capacity of divans and seat.
TC Nos.: A-669
Models: McDonnell Douglas CorporationDC-3 Series
ACO: Chicago ACO Branch, Tel: +1 (847) 294-7358

STC Holder: Southern Ohio Avn Co 10600 Springboro Pike, Miamisburg, OH 45342, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA358EA	Status: Current	App Date:	Rev Date: 01/01/1960
Description: Increased capacity of divans and seat.
TC Nos.: A-669
Models: McDonnell Douglas CorporationDC-3 Series
ACO: AIR-760: Central Certification Branch CHI