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: Orlando Heli Airways Inc P.O. Box 2802, Orlando, FL 32802, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH1072SO	Status: Current	App Date:	Rev Date: 05/18/1979
Description: Installation of dust boot retainer rings (in rotor head dampers).
TC Nos.: 1H4, HR1SO
Models: Sikorsky Aircraft CorporationH-19A, H-19D, H-19G, S-55, S-55B, S-55C
ACO: AIR-750: East Certification Branch ATL

STC Holder: Orlando Heli Airways Inc P.O. Box 2802, Orlando, FL 32802, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH1523SO	Status: Current	App Date:	Rev Date: 12/08/1983
Description: Add approved fuels: unleaded automotive gasoline 87 minimum antiknock index and leaded automotive gasoline, 88 minimum antiknock index (RON & MON)/2. Intermixing with aviation gasoline also approved.
TC Nos.: 1H4
Models: Sikorsky Aircraft CorporationS-55
ACO: AIR-750: East Certification Branch ATL

STC Holder: Orlando Heli Airways Inc P.O. Box 2802, Orlando, FL 32802, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH1524SO	Status: Current	App Date:	Rev Date: 12/08/1983
Description: Add approved fuels: unleaded automotive gasoline, 87 minimum antiknock index and leaded automotive gasoline, 88 minimum antiknock index (RON & MON)/2. Intermixing with aviation gasoline also approved.
TC Nos.: HR1SO
Models: Sikorsky Aircraft CorporationH-19A, HRS-1/CH-19, UH-19C, YH-19A
ACO: AIR-750: East Certification Branch ATL

STC Holder: Orlando Heli Airways Inc P.O. Box 2802, Orlando, FL 32802, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH1599SO	Status: Current	App Date:	Rev Date: 04/26/1984
Description: Removal of main transmission oil cooler blower and associated parts.
TC Nos.: 1H4, HR1SO
Models: Sikorsky Aircraft CorporationCH-19E, H-19A, H-19D, H-19G, HRS-1/CH-19, HRS-3/H-19B, S-55, S-55B, UH-19C, YH-19A
ACO: AIR-750: East Certification Branch ATL

STC Holder: Orlando Heli Airways Inc P.O. Box 2802, Orlando, FL 32802, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SH1775SO	Status: Current	App Date:	Rev Date: 04/08/1985
Description: Installation of Wright R-1300-3 engine.
TC Nos.: 1H4
Models: Sikorsky Aircraft CorporationS-55
ACO: AIR-750: East Certification Branch ATL