NTSB Identification: LAX97LA057.
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Accident occurred Friday, November 29, 1996 in MCGREGOR POINT, HI
Probable Cause Approval Date: 08/25/1997
Aircraft: Bell 206B, registration: N6262N
Injuries: 2 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.

The helicopter was operating in mountainous terrain assisting in the construction of power lines. The helicopter was positioning the passenger near the conductor lines in preparation for a line-pull. The passenger was sitting behind the pilot in the rear seat. The passenger would physically kick the travelers into the proper position at the top of the 80-foot metal pole in preparation for a line pull to establish proper tension. According to the witnesses, the helicopter was approaching pole number 89 from the upwind side to straighten the traveler. As they aligned the traveler and moved away, the rotor wash cocked the traveler off-line again. The helicopter reapproached the pole at a speed higher than before. The helicopter skid contacted the pole 2 feet below the top and the helicopter dynamically rolled over the top of the pole. The pole entered the pilot's doorway. The pilot released all controls and braced himself against the pole during the maneuver. The helicopter severed three main conductors before colliding with the ground.

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

the pilot's failure to maintain control of the aircraft and distance from the pole.

Full narrative available

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