Jun 10, 1999
Accident
Substantial PENDLETON, OR
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 137
Probable Cause
A fouled external load cable, and the pilot's operation of the helicopter with a non-approved external bucket installation, resulting in misrouted hydraulic lines and consequent malfunction of the external load release system.
NTSB SEA99LA098