NTSB Identification: LAX86DVA17.
The docket is stored on NTSB microfiche number 34037.
Accident occurred Monday, September 29, 1986 in VISALIA, CA
Aircraft: HILLER UH-12E, registration: N5385V
Injuries: 1 Fatal.

WHILE EXECUTING A 90 DEG/270 DEG COURSE REVERSAL TURN, THE PLT LOST CONTROL OF THE HELICOPTER WHICH COLLIDED WITH THE GROUND. GROUND WITNESSES REPORTED THAT THE PLT HAD COMPLETED SPRAYING A COTTON FIELD AND ADVISED THE GROUND FLAGGER THAT THE WINDS HAD CHANGED TO A DOWNWIND CONDITION. THE PLT THEN EXECUTED THE COURSE REVERSLA MANEUVER WHICH WAS DESCRIBED AS A 'SLOW AIRSPEED, TIGHT RIGHT TURN, FOLLOWED BY A TIGHT LEFT TURN.' THE HELICOPTER CRASHED DURING THE LEFT TURN AND WAS DESTROYED BY IMPACT FORCES AND POST-IMPACT FIRE. EXAMINATION OF THE HELICOPTER DISCLOSED NO EVIDENCE OF ANY PRE-EXISTING MALFUNCTIONS OR FAILURES.

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

AIRCRAFT PERFORMANCE,TURN CAPABILITY..EXCEEDED

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

AIRSPEED..NOT MAINTAINED..PILOT IN COMMAND

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