NTSB Identification: SEA86LA106.
The docket is stored on NTSB microfiche number 30730.
Accident occurred Friday, April 18, 1986 in LAPWAI, ID
Aircraft: BELL 47G-3B1, registration: N1371X
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 HELICOPTER ROTOR MAST STRUCK POWERLINES AT AN ALT OF 12 FT AGL DURING AN AERIAL APPLICATION FLT. THE PLT REPORTED SHE INADVERTENTLY MISSED SEEING THE POWERLINES WHEN SHE MADE HER SURVEY OF THE TERRAIN PRIOR TO THIS FLT. THE HELICOPTERDESCENDED AND CONTACTED THE TERRAIN IN A NOSE LOW ATTITUDE AFTER STRIKING THE LINES.

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

PREFLIGHT PLANNING/PREPARATION..INACCURATE..PILOT IN COMMAND

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

CLEARANCE..NOT MAINTAINED..PILOT IN COMMAND


Contributing Factors

OBJECT..WIRE,TRANSMISSION

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