NTSB Identification: SEA83FA052.
The docket is stored on NTSB microfiche number 20305.
Accident occurred Friday, February 04, 1983 in NEAR ASOTIN, WA
Aircraft: MAULE M-5-220C, registration: N51599
Injuries: 1 Serious,3 Minor.
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.
WHILE FLYING IN THE VICINITY OF THE SNAKE RIVER, THE ENGINE LOST POWER. EMERGENCY LANDING AREAS WERE LIMITED. THE PLT ELECTED TO LAND ON A ROAD NEAR THE RIVER. WHILE IN A RIGHT TURN TO LINE UP WITH THE ROAD, THE ACFT COLLIDED WITH A SINGLE POWER LINE, THEN CRASHED. AN INVESTIGATION REVEALED THAT TE #5 PISTON PIN, PN 17658, HAD FAILED. THE AFT PISTON PIN BOSS HAD FAILED, WHICH PERMITTED THE FREE END OF THE CONNECTING ROD TO DAMAGE THE #5 CYLINDER AND THE CRANKCASE IN THE VICINITY OF THE #5 AND #6 CRANKSHAFT THROWS. TOTAL FLT TIME OF THE ENGINE WAS 699.5 HRS.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:ENGINE ASSEMBLY,PISTON..FAILURE,TOTAL
TERRAIN CONDITION..NONE SUITABLE
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