The STC search system is a complimentary service provided to the aviation community. We hope you find it useful. We do not provide access to STC engineering. For that you need to contact the STC holder directly. Our primary product is a comprehensive library of aviation regulations and standards, including tools for generating Airworthiness Directive compliance reports.

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