NTSB Identification: SEA86LA150.
The docket is stored on NTSB microfiche number 31341.
Accident occurred Sunday, June 22, 1986 in KENT, WA
Aircraft: PIPER J3C, registration: N3667K
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.

A FORCED LANDING WAS MADE AFTER A TOTAL LOSS OF POWER. LANDING WAS ACCOMPLISHED ONTO VERY ROUGH RISING TERRAIN. DURING LANDING ROLL THE LEFT MAIN GEAR COLLAPSED. INVESTIGATION REVEALED A BROKEN CRANKSHAFT. A TOP OVERHAUL HAD BEEN DONE LESS THAN 30 HOURS PRIOR AND A MAJOR OVERHAUL DONE LESS THAN 300 HOURS PRIOR.

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

ENGINE ASSEMBLY,CRANKSHAFT..DISINTEGRATED

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

TERRAIN CONDITION..NONE SUITABLE

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

TERRAIN CONDITION..ROUGH/UNEVEN

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