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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