NTSB Identification: ATL86LA177.
The docket is stored on NTSB microfiche number 31265.
Accident occurred Friday, June 20, 1986 in WEST CHESTER, OH
Aircraft: PIPER PA-24-250, registration: N6639P
Injuries: 1 Uninjured.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
DRG FLT, THE ENG LOST POWER & THE PLT WAS UNABLE TO MAINTAIN ALT. HE MADE A FORCED LANDING ON A ROAD, BUT DRG THE LNDG ROLL, THE ACFT COLLIDED WITH A ROAD SIGN. A POST CRASH EXAM OF THE ENG REVEALED THE #6 CYLINDER HAD SEPARATED APRX 4' ABOVE THE CYLINDER FLANGE. A METALLURGICAL EXAM OF THE FRACTURE SURFACE REVEALED THERE WAS A FATIGUE CRACK PRESENT PRIORTO THE FAILURE. THE ENG WAS OVERHAULED APRX 11 FLT HRS PRIOR TO THE ACCIDENT. NO FATIGUE CRACKING WAS NOTED AT THAT TIME.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:ENGINE ASSEMBLY,PISTON..SEPARATION
The National Transportation Safety Board determines the probable cause(s) of this accident to be:MAINTENANCE,OVERHAUL..POOR..OTHER MAINTENANCE PERSONNEL
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