The Allison Model 250, now known as the Rolls-Royce M250, (US military designations T63 and T703) is a highly successful turboshaft engine family, originally developed by the Allison Engine Company in the early 1960s. The Model 250 has been …

1998年1月31日 · his article discusses some of the most common maintenance events on each of the three major components that make up an Allison 250 C20. The compressor, the turbine, and the gearbox.

ASI provides Rolls-Royce (Allison) Gas Turbine Helicopter Engine Model 250 Series maintenance, repair, overhaul, rentals, exchanges, sales & service.

1048 250 Compressor Erosion Inspection Cancelled--Ref: Ops. And Maint. Manual 1049 Troubleshooting The Start Derich System On Bendix 250--C20/C20B Cancelled--Ref: Ops. And Maint. Manual 1050 250--C20C Engine Time Between Overhauls Cancelled 1051 250--C20C Engine Life Limited Parts Cancelled 1052 Oil Foaming And Oil Pressure Fluctuations 03--09--78

The Rolls-Royce/Allison Model 250 is a compact turboshaft engine designed to power both civil and military helicopters. Developing between 420 and 715 shat-horse-power and featuring a two-shaft modular design.

250-c20 Operation & Maintenance Manual - Free ebook download as PDF File (.pdf) or read book online for free. Scribd is the world's largest social reading and publishing site.

Originally developed by Allison as the T63 250 shp turboshaft for the US Army, has spawned an entire family of small turbine engines. Rolls-Royce acquired Allison in 1995. The Model 250 (M250) powers a large number of helicopters and small aircraft.