Aug 25, 1999
Accident
Substantial LOST HILLS, CA
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 137
Probable Cause
Failure and separation of the 90-degree gearbox as a result of the disengagement of the pinion and gear teeth. The cause(s) of the pinion and gear disengagement were undetermined.
NTSB LAX99LA283