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: Donahue D H 1016 W. Houghton St., Santa Fe, NM 87501, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4-137	Status: Current	App Date:	Rev Date: 11/11/1974
Description: Installation of exhaust collector assembly including carburetor heater muff on Wright R1820-56A.
TC Nos.: A-723
Models: Lockheed Aircraft CorporationLockheed 18
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Donahue D H 1016 W. Houghton St., Santa Fe, NM 87501, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4-223	Status: Current	App Date:	Rev Date: 11/11/1974
Description: Installation of exhaust collector assembly including carburetor heat muff. (Learjet)
TC Nos.: A-723
Models: Lockheed Aircraft CorporationLockheed 18
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Donahue D H 1016 W. Houghton St., Santa Fe, NM 87501, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4-57	Status: Current	App Date:	Rev Date: 11/11/1974
Description: Rework of outer wing panel for348 gallon integral fuel tank.
TC Nos.: A-723
Models: Lockheed Aircraft CorporationLockheed 18
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Donahue D H 1016 W. Houghton St., Santa Fe, NM 87501, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4-973	Status: Current	App Date:	Rev Date: 11/11/1974
Description: Pitot - static system.
TC Nos.: A-723
Models: Lockheed Aircraft CorporationLockheed 18
ACO: AIR-760: Central Certification Branch FTW