Allison 250 (M250) Engine

Rolls-Royce (Allison) · turboshaft · 3,927 engine-system SDR reports · 0 ADs

420–715 shpPower
1961First Run
In production (M250)Status
Bell 206/407, MD 500 light helicopters — 31,000+ built.Note

Reported engine systems (FAA SDR)

  • Engine - Turbine/Turboprop2,282 (58.1%)
  • Engine Fuel & Control1,047 (26.7%)
  • Engine Air153 (3.9%)
  • Engine Indicating111 (2.8%)
  • Engine Oil94 (2.4%)
  • Ignition73 (1.9%)
  • Power Plant62 (1.6%)
  • Engine Exhaust39 (1%)
  • Engine Controls31 (0.8%)
  • Other24 (0.6%)
  • Starting8 (0.2%)
  • Reciprocating Engine3 (0.1%)

Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).

Occurrences naming this engine

24 occurrences, 5 fatal, 11 fatalities.

Engine-failure occurrences on aircraft using this engine

0 occurrences, 0 fatal, 0 fatalities.

These occurrences are engine-failure events on aircraft families that can be fitted with this engine; the engine type of each specific aircraft is not confirmed. Do not read this list as a record for this engine.