NTSB Identification: MKC84LA210.
The docket is stored on NTSB microfiche number 26352.
Accident occurred Monday, July 09, 1984 in MC GEHEE, AR
Aircraft: GRUMMAN G164B, registration: N8222K
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.

THE ACFT WAS ENGAGED IN AN AERIAL APPLICATION FLT WHEN THE ENG LOST POWER. THE PLT MADE A FORCED LANDING IN A BEAN FIELD. DURING THE LANDING ROLL, THE ACFT STRUCK A LEVEE THAT WAS OBSCURED BY HIGH VEGETATION & NOSED OVER. A POST-ACCIDENT INVESTIGATION REVEALED THE CARBURETOR NEEDLE VALVE SEAT WAS LOOSE & ALLOWED FUEL TO BYPASS THE VALVE & ENTER THE INTAKE MANIFOLD. AN INTERVIEW WITH PERSONNEL THAT OVERHAULED THE CARBURETOR REVEALED THAT RECOMMENDED TORQUE VALVES WERE NOT BEING USED DURING INSTALLATION OF THE NEEDLE VALVE SEAT. AN INVESTIGATION ALSO REVEALED THAT PRIOR TO THIS FLT, THE ENG COULD NOT BE SHUT DOWN BY MOVING THE MIXTURE CONTROL TO THE 'CUT-OFF' POSITION. TO STOP THE ENG ON PREVIOUS FLTS, THE PLT USED THE FUEL SELECTOR VALVE BY MOVING IT TO THE 'OFF' POSITION.

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

OPERATION WITH KNOWN DEFICIENCIES IN EQUIPMENT..CONTINUED..PILOT IN COMMAND

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

FUEL SYSTEM,CARBURETOR..LEAK


Contributing Factors

TERRAIN CONDITION..HIDDEN OBSTRUCTION(S)


Contributing Factors

FUEL SYSTEM,CARBURETOR..LOSS,TOTAL


Contributing Factors

MAINTENANCE,OVERHAUL..IMPROPER..OTHER MAINTENANCE PERSONNEL


Contributing Factors

TERRAIN CONDITION..DIRT BANK/RISING EMBANKMENT

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