Final
1 minor
Feb 7, 2025
N7191B accident at Spearman, TX
Robinson Helicopter R22 BETA — Powerplant sys/comp malf/fail at Spearman, TX
DateFeb 7, 2025
Tail numberN7191B
AircraftRobinson R22 BETA · Robinson R22 · R22
LocationSpearman, TX
Phase of flightManeuvering
OperationPart 91 Personal
Injuries1 minor
NTSB caseCEN25LA093
Probable cause
Improperly torqued intake manifold bolts that allowed unmetered air to enter the engine, resulting in an overly lean fuel-air mixture, eventual failure of the No. 3 cylinder intake valve, and a total loss of engine power.
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