NTSB Identification: CHI86FEX06.
The docket is stored on NTSB microfiche number 32085.
Accident occurred Friday, March 28, 1986 in HENRYVILLE, IN
Aircraft: PIPER PA-32-260, registration: N4804S
Injuries: 5 Serious.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

SHORTLY AFTER LEVELING THE ACFT OFF AT 9000 FT MSL, THE PLT EXPERIENCED AN ENGINE FAILURE. DURING THE SUBSEQUENT FORCED LANDING THE ACFT STRUCK A TREE AND WAS FURTHER DAMAGED DURING THE FORCED LANDING ROLL. METALLURGICAL EXAM REVEALED THE CRANKSHAFT FAILED DUE TO HIGH CYCLE, LOW STRESS FATIGUE CRACKING WHICH INITIATED FROM A SUBSURFACE ORIGIN AREA. THE CAMSHAFT WAS ALSO FOUND FAILED, BUT THIS WAS DETERMINED TO HAVE OCCURRED FOLLOWING THE CRANKSHAFT FAILURE.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ENGINE ASSEMBLY,CRANKSHAFT..FATIGUE

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ENGINE ASSEMBLY,CRANKSHAFT..FAILURE,TOTAL


Contributing Factors

TERRAIN CONDITION..NONE SUITABLE


Contributing Factors

OBJECT..TREE(S)


Contributing Factors

TERRAIN CONDITION..HIGH VEGETATION

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