Rolls-Royce M250

The Rolls-Royce M250 is Rolls-Royce's turboshaft powering helicopters, where power-to-weight and hot-and-high margins decide real capability. First run in 1958, it is a legacy design with decades of accumulated service history. It produces 650 shp of shaft power.

The Rolls-Royce M250 (originally the Allison Model 250) is the most widely used turboshaft engine in the world for light helicopters, with over 30,000 engines produced since its introduction in the 1960s. It is available in both turboshaft (helicopter) and turboprop (fixed-wing) configurations, with power ratings ranging from 250 to 715 shp across its many variants. The engine's modular construction and reverse-flow design make it well-suited for compact airframe installations. Its applications include the Bell 206 JetRanger, Bell 206L LongRanger, Bell 407, MD 500 and Robinson R66, among others — and an engine's installed base matters commercially, because a widely flown type means deeper parts availability, more shop options and better residual liquidity.

For turboshafts, buyers weigh power margin at the temperatures and altitudes they actually operate, the cost and interval of module overhauls, and the health-monitoring data available — trend data materially de-risks a purchase. Condition, documentation and programme status are what separate two otherwise identical engines — request a quote above and we'll set out the options by condition: new, overhauled, serviceable or core.