Type certificate E1NM
Held today by Honeywell Aerospace US LLC, earlier by Alliedsignal. It covers 10 models; about 694 aircraft on the U.S. register are built to the designs it names. Last revised March 27, 2026 (revision 13). 33 FAA orders name its designs.
Models under this certificate 10
TFE731-60, TFE731-40, TFE731-20, TFE731-20R, TFE731-20AR, TFE731-40AR, TFE731-20BR, TFE731-50R, TFE731-40R, TFE731-40BR
Engine series
Honeywell TFE-731-series 291 aircraftHoneywell TFE731-20 1 aircraftHoneywell TFE731-20AR 51 aircraftHoneywell TFE731-20BR 105 aircraftHoneywell TFE731-40 17 aircraftHoneywell TFE731-40AR 50 aircraftHoneywell TFE731-40R 18 aircraftHoneywell TFE731-50R 123 aircraftHoneywell TFE731-60 38 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 33 · newest first
2019-04-252019-05-07 · Turbine Engine Compressor Section · engine
2017-11-022017-20-01 · Turbine Engine Compressor Section · engine
2016-05-052016-07-02 · Failure of the interstage turbine transition duct · engine
2012-10-022012-17-05 · First stage low-pressure turbine (LPT1) rotor assembly · engine
2012-10-012012-16-14 · LPT2 rotor blades · engine
2010-04-212010-06-11 · Second stage low-pressure compressor rotor (LPCR) discs · engine
2008-10-272008-19-12 · ITT duct · engine
2008-03-062008-02-19 · High pressure (HP) turbine rotor assemblies · engine
Source: FAA type certificate data sheets (Dynamic Regulatory System); register counts from the FAA register of October 7, 2026. Connections as data: /graph/certificate/E1NM.json.