NTSB Identification: LAX87DUM04.
The docket is stored on NTSB microfiche number 35442.
Accident occurred Monday, May 11, 1987 in HOLTVILLE, CA
Probable Cause Approval Date: 02/14/1989
Aircraft: TEXAS HELICOPTER M74L-WASP, registration: N1001Z
Injuries: 1 Minor.

DURING AN AERIAL APPLICATION FLIGHT, THE PILOT REPORTED THAT THE ELECTRICAL SYSTEM FAILED. SHORTLY AFTER, THE AIRCRAFT COLLIDED WITH POWER LINES. INSPECTION OF THE AIRCRAFT REVEALED THAT THE GENERATOR WAS INOPERATIVE. THERE WERE NO OTHER REPORTED MECHANICAL FAILURES OR MALFUNCTIONS.

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

VISUAL LOOKOUT..NOT MAINTAINED..PILOT IN COMMAND


Contributing Factors

ELECTRICAL SYSTEM,GENERATOR..FAILURE,TOTAL


Contributing Factors

DIVERTED ATTENTION..PILOT IN COMMAND


Contributing Factors

OBJECT..WIRE,TRANSMISSION


Contributing Factors

LIGHT CONDITION..DARK NIGHT

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