Garrett F109

The F109, company designation TFE109, was a small turbofan engine developed by Garrett AiResearch for the Fairchild T-46 trainer. When the United States Air Force cancelled the T-46 program in 1986, further development ceased, and the civil TFE109 version ended with it. It had dual high-pressure centrifugal compressors driven off the high-pressure turbine and an annular combustor, measured 942 millimetres long and 523 millimetres in diameter, weighed 182 kilograms dry and produced 5.92 kilonewtons of maximum takeoff thrust on Jet A. Related versions include the ATE109 and TSE109 turboshaft demonstrators, the latter first run on 2 August 1984, and the engine is listed as related development of the Garrett TPE331 and the LHTEC T800. Applications named are the Fairchild T-46 and the Promavia Jet Squalus.