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Type certificate E4WE

Held today by Honeywell Aerospace US LLC, earlier by Garrett, Airesearch, Alliedsignal, INC., Garrett, Airesearch. It covers 48 models; about 114 aircraft on the U.S. register are built to the designs it names. Last revised March 27, 2026 (revision 35). 50 FAA orders name its designs, and 13 approved modifications build on it.

Models under this certificate 48

TPE331-9U, TPE331-10GP, TPE331-10UGR, TPE331-10J, TPE331-10UK, TPE331-10GT, TPE331-12B, TPE331-5A, TPE331-10UG, TPE331-12UA, TPE331-10UR, TPE331-6U, TPE331-6, TPE331-11UA, TPE331-10UJ, TPE331-3, TPE331-5, TPE331-10G, TPE331-12UAN, TPE331-10N, TPE331-10U, TPE331-10UA, TPE331-10GR, TPE331-10R, TPE331-3UW, TPE331-5B, TPE331-5U, TPE331-10, TPE331-3U, TPE331-10P, TPE331-10T, TPE331-10A, TPE331-12JR, TPE331-10B, TPE331-11U, TPE331-12UER, TPE331-12, TPE331-9, TPE331-3W, TSE331-3U, TPE331-10UF, TPE331-5AB, TPE331-6A, TPE331-12UHR, TPE331-10AV, TPE331-8, TPE331-12UAR, TPE331-8A

Engine series

Honeywell TPE331-10 13 aircraftHoneywell TPE331-10AV 3 aircraftHoneywell TPE331-10N 11 aircraftHoneywell TPE331-10R 13 aircraftHoneywell TPE331-10T 8 aircraftHoneywell TPE331-10U 4 aircraftHoneywell TPE331-10UA 1 aircraftHoneywell TPE331-11U 8 aircraftHoneywell TPE331-12JR 15 aircraftHoneywell TPE331-12UHR 3 aircraftHoneywell TPE331-3U 1 aircraftHoneywell TPE331-5 2 aircraftHoneywell TPE331-6 3 aircraftHoneywell TPE331-8 1 aircraftHoneywell TPE331-series 28 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 50 · newest first

2018-12-102018-22-01 · Turbine Section · engine
2018-10-222018-17-15 · Turbine Engine Combustion Section · engine
2018-07-262018-13-05 · Turbine Engine Reduction Gear · engine
2018-02-282018-02-14 · Turbine Engine Combustion Section · engine
2016-11-282016-21-07 · Fuel control drive · engine
2016-11-042016-18-17 · Compressor impeller · engine
2015-11-132015-18-03 · Engine propeller shaft coupling failures · engine
2015-07-222015-12-04 · Fuel control unit (FCU) · engine

Approved modifications 13 · companies holding the most

National Flight Services, INC 4West-Figueroa Trust 1Thrush Aircraft INC. 1Tae Aerospace (Ctec) 1Reds Aircraft Service INC. 1National Flight Lakeland 1Hartzell Propeller INC 1Air Midwest, INC 1

Source: FAA type certificate data sheets (Dynamic Regulatory System); register counts from the FAA register of October 7, 2026. Connections as data: /graph/certificate/E4WE.json.