Jan 1, 2012
Accident
Substantial Lohn, TX
Injuries2 serious
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
The improper installation of the tail rotor gearbox by maintenance personnel, which led to accelerated wear of the ring and pinion gears, resulting in the loss of tail rotor effectiveness and subsequent forced landing.
NTSB CEN12LA120