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: 4

STC Holder: Dow Aero LLC 6800 Camille Avenue, Oklahoma City, OK 73149		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1097NW	Status: Current	App Date: 12/01/1980	Rev Date: 03/13/2025
Description: Installation of Winters AirStair at the aft passenger entrance.
TC Nos.: A16WE
Models: The Boeing Company737-200 Series
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Dow Aero LLC 6800 Camille Avenue, Oklahoma City, OK 73149		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5490NM	Status: Current	App Date: 07/11/1991	Rev Date: 03/13/2025
Description: Installation of World Auxiliary Power Co. (WAPCO) mid passenger doorway airstair and FWD (L1) passenger doorway airstair, AFT stowage configuration.
TC Nos.: A2NM
Models: The Boeing Company757-200 Series
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Dow Aero LLC 6800 Camille Avenue, Oklahoma City, OK 73149		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA8000NM	Status: Current	App Date: 01/31/1991	Rev Date: 02/05/2015
Description: Installation of World Auxiliary Power Company (WAPCO) lower forward cargo door airstair
TC Nos.: A20WE
Models: The Boeing Company747-200B Series, 747-200C Series, 747-200F Series
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Dow Aero LLC 6800 Camille Avenue, Oklahoma City, OK 73149		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST01940LA	Status: Current	App Date: 06/30/2005	Rev Date: 03/13/2025
Description: Installation of Airstair
TC Nos.: A1NM
Models: The Boeing Company767-200 Series
ACO: AIR-760: Central Certification Branch FTW