Type certificates · engine · current

Type certificate E4CE

Held today by Rolls-Royce Corporation, earlier by Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana), Allison Gas Turbine Division of General Motors\Allison Engine Company\Rolls-Royce Corporation (Indiana). It covers 23 models; about 795 aircraft on the U.S. register are built to the designs it names. Last revised June 29, 2010 (revision 42). 48 FAA orders name its designs, and 8 approved modifications build on it.

Models under this certificate 23

250-C19, 250-C18, 250-C20, 250-C20S, 250-C20C (T63-A-720), 250-C20R/4, 250-C10D (T63-A-700), 225-C10A, 250-C20F, 250-C18A, 225-C10, 250-C20R/2, 250-C18B, 250-C10 (T63-A-5), 250-C20W, 250-C20J, 250-C20R, 250-C10B (T63-A-5A), 250-C300/B1, 250-C300/A1, 250-C20R/1, 250-C18C, 250-C20B

Engine series

Rolls-Royce 250-C18 1 aircraft Rolls-Royce 250-C20 43 aircraft Rolls-Royce 250-C20B 214 aircraft Rolls-Royce 250-C20F 2 aircraft Rolls-Royce 250-C20J 82 aircraft Rolls-Royce 250-C20R 4 aircraft Rolls-Royce 250-C20R/1 5 aircraft Rolls-Royce 250-C20R/2 24 aircraft Rolls-Royce 250-C20R/4 1 aircraft Rolls-Royce 250-C20S 2 aircraft Rolls-Royce 250-C20W 51 aircraft Rolls-Royce 250-C300/A1 351 aircraft Rolls-Royce 250-C47 series 15 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 48 · newest first

2022-06-282022-10-06 · Turbine Section · engine

2018-08-162018-13-01 · Turbine Governor · engine

2017-10-132017-18-14 · Turbine Section · engine

2015-03-092015-02-22 · Repetitive visual inspections · engine

2012-08-142012-14-06 · Released turbine blades and shrouds · engine

2006-11-022006-20-07 · Adds an additional life limit for third- and fourth-stage turbine wheels · engine

2006-09-072006-16-04 · Inspection of the fuel nozzle screen · engine

2006-07-262006-13-06 · Gas producer rotor assembly tie bolts · engine

Approved modifications 8 · companies holding the most

Unison Industries 2 Pratt & Whitney Engine Services INC. 2 Siam Hiller Holdings INC 1 Shadin Avionics 1 Fifty-Ten-Yankee LLC 1 Bell Helicopter Textron INC. 1

Source: FAA type certificate data sheets (Dynamic Regulatory System); register counts from the FAA register of October 5, 2026. Connections as data: /graph/certificate/E4CE.json.