Type certificate E21NE
Held today by Pratt & Whitney Canada CORP., earlier by Pratt & Whitney Canada, INC.. It covers 5 models; about 193 aircraft on the U.S. register are built to the designs it names. Last revised June 4, 2007 (revision 5). 7 FAA orders name its designs, and 2 approved modifications build on it.
Models under this certificate 5
PT6B-37A, PT6B-37, PT6B-36, PT6B-36B, PT6B-36A
Engine series
Pratt & Whitney Canada PT6B-36A 3 aircraftPratt & Whitney Canada PT6B-36B 4 aircraftPratt & Whitney Canada PT6B-37A 186 aircraft
The data sheet on the FAA's site: the approved engines and propellers, weights, speeds and limits for each model.
FAA orders on these designs 7 · newest first
2020-10-072020-18-05 · Fuel Control/Turbine Engines · engine
2019-12-242019-22-03 · Turbine Engine Reduction Gear · engine
2015-11-182015-20-04 · Reduction gearbox (RGB) assembly · engine
2004-10-182004-20-04 · Compressor rear hubs · engine
1988-11-2988-03-01 · Compressor Stator Assembly · engine
1975-05-2075-11-04 · Reduction Gearbox Engine Distress · engine
1969-11-1569-23-06 · Fuel Pumps · engine
Approved modifications 2 · companies holding the most
Source: FAA type certificate data sheets (Dynamic Regulatory System); register counts from the FAA register of October 5, 2026. Connections as data: /graph/certificate/E21NE.json.