Final
1 minor
Mar 17, 2022
N500MZ accident at Adair, IA
Hughes (Md Helicopters) 369 — Loss of engine power (partial) at Adair, IA
DateMar 17, 2022
Tail numberN500MZ
AircraftHughes 369 · Hughes/MD 500 · H500
LocationAdair, IA
Phase of flightManeuvering
OperationPart 133 Exld
Injuries1 minor
NTSB caseCEN22LA146
Probable cause
The mechanic’s failure to properly torque a fuel control unit B-nut, which resulted in a partial loss of engine power, an attempted autorotation, and an impact with terrain.
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