Jul 2, 2016
Accident
Substantial Brawley, CA
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 137
Probable Cause
The engine's degraded performance due to excessive wear of the engine bleed valve, which prevented it from closing during the accident flight. Contributing to the accident was the operator's failure to overhaul the bleed valve within the manufacturer-recommended interval.
NTSB WPR16LA134