NTSB Identification: MIA88FA192.
The docket is stored on NTSB microfiche number 36295.
Accident occurred Wednesday, June 15, 1988 in BENOIT, MS
Probable Cause Approval Date: 06/07/1989
Aircraft: BELL 47G3B-1, registration: N73947
Injuries: 1 Serious.

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.

THE PLT SAID THE ENGINE MISFIRED THREE TIMES DURING TAKEOFF AND LOST PARTIAL POWER. THE HELICOPTER SETTLED INTO A RICE FIELD AND THE DAMAGED SPRAY BOOMS BECAME ENTANGLED. THE HELICOPTER NOSED OVER IN THE HIGH VEGETATION. THE PLT STATED THE ENGINE ACCELERATED AND SHUTDOWN AS THE AIRCRAFT CAME TO REST INVERTED. EXAMINATION OF THE CARBURETOR BOWL REVEALED RUST. TWO 1/4 INCH PARTICLES OF RUST WERE LYING IN THE BOTTOM OF THE BOWL. NO WATER WAS FOUND IN THE ENGINE OR FUEL SYSTEM.

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

FUEL SYSTEM,CARBURETOR..CORRODED

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

FUEL SYSTEM,CARBURETOR..CONTAMINATION

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

FUEL SYSTEM,CARBURETOR..BLOCKED(PARTIAL)


Contributing Factors

AUTOROTATION..ATTEMPTED..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..HIGH VEGETATION


Contributing Factors

ROTOR RPM..NOT MAINTAINED..PILOT IN COMMAND

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