NTSB Identification: LAX86LA029.
The docket is stored on NTSB microfiche number 29728.
Accident occurred Monday, October 28, 1985 in GILA BEND, AZ
Aircraft: Schweizer G-164B, registration: N8487K
Injuries: 1 Serious.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

AFTER SPRAYING A FIELD AND WHILE ENROUTE TO THE LANDING SITE, THE ACFT ENGINE BACKFIRED FOLLOWED BY A RAPID LOSS OF POWER. THE PLT NEGOTIATED AN EMERGENCY LANDING ON A PRIVATE DIRT ROAD. DURING THE LANDING ROLL-OUT, THE AIRCRAFT LEFT WING STRUCK A TREE CAUSING THE ACFT TO FLIP OVER ONTO ITS BACK. EXAMINATION OF THE ENGINE DISCLOSED NO EVIDENCE OF ANY MECHANICAL MALFUNCTION OF FAILURE. THE CARBURETOR SCREEN, BOWL AND THE MAIN FUEL LINES WERE FREE OF ANY CONTAMINATES. THE GASCOLATOR CONTAINED A LARGE AMOUNT OF MUDDY WATER.

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

FLUID,FUEL..CONTAMINATION

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

AIRCRAFT PREFLIGHT..INADEQUATE..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..ROUGH/UNEVEN


Contributing Factors

OBJECT..TREE(S)

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