Jun 8, 1991
Accident
Substantial THERMAL, CA
Injuries2 minor
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
THE PARTIAL FAILURE OF THE ENGINE/POWERPLANT FROM A WORN INTAKE VALVE AND THE FAILURE OF COMPANY/OPERATOR MANAGEMENT TO PERFORM AN OVERHAUL ON THE ENGINE WITHIN THE TIME FRAME RECOMMENDED BY THE ENGINE MANUFACTURER.
NTSB LAX91LA255