NTSB Identification: DEN87LA119.
The docket is stored on NTSB microfiche number 34112.
Accident occurred Wednesday, May 06, 1987 in ST. IGNATIUS, MT
Probable Cause Approval Date: 08/31/1988
Aircraft: CESSNA A188B, registration: N9282R
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.
AN AG PLT WAS SPRAYING A FIELD NEAR THE LOCAL ARPT, AT 100 FEET AGL. DURING AN AERIAL APPLICATION MANEUVER, THE ENGINE MADE A LOUD BANG AND STOPPED. THE PLT LEVELED THE ACFT, SELECTED A LANDING SITE AND LANDED. DURING THE ROLL OUT, THE ACFT CROSSED AN IRRIGATION DITCH AND HIT A FENCE. THE LEFT GEAR WAS REMOVED BY A FENCE POST AND THE ACFT SKIDDED, RIGHT WING FIRST, TO A STOP. A POST CRASH INSPECTION OF THE ENGINE SHOWED A FAILURE OF THE CRANKSHAFT. A SERVICE BULLETIN ISSUED IN FEBRUARY, 1987, WARNED OF SOME PREVIOUS FAILURES OF CRANKSHAFTS IN THIS ENGINE.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:ENGINE ASSEMBLY,CRANKSHAFT..BRITTLE FRACTURE
TERRAIN CONDITION..HIDDEN OBSTRUCTION(S)
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