PORT HEIDEN, AK, USA
N8327S
PIPER PA-32
THE NON SCHEDULED AIR TAXI CARGO FLIGHT, CONDUCTED UNDER 14 CFR PART 135, EXPERIENCED A LOSS OF ENGINE POWER WHILE IN CRUISE FLIGHT. THE PILOT MADE AN EMERGENCY LANDING ON SNOW COVERED TUNDRA. A POST ACCIDENT EXAMINATION OF THE POWERPLANT BY A FEDERAL AVIATION ADMINISTRATION AVIATION SAFETY INSPECTOR REVEALED THAT THE NUMBER 3 CYLINDER INTAKE VALVE STEM FAILED, CAUSING THE VALVE TO PASS THROUGH THE PISTON, RESULTING IN EXTENSIVE INTERNAL DAMAGE TO THE ENGINE.
THE FAILURE OF THE NUMBER 3 CYLINDER INTAKE VALVE STEM. A FACTOR IN THE DEGREE OF DAMAGE THE AIRCRAFT SUSTAINED IN THE MISHAP WAS ATTRIBUTABLE TO THE OFF AIRPORT EMERGENCY LANDING ON SHOW COVERED TUNDRA.
Source: NTSB Aviation Accident Database
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