NTSB Identification: LAX90LA033.
The docket is stored on NTSB microfiche number 41178.
Accident occurred Friday, November 17, 1989 in BARSTOW, CA
Probable Cause Approval Date: 06/25/1992
Aircraft: McDonnell Douglas 369, registration: N1097G
Injuries: 1 Fatal.

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 PLT BEGAN THE EXTERNAL SLING LOAD OPERATION-STRINGING WIRE CONDUCTORS - ABT 1 HR AND 15 MIN BEFORE THE ACCIDENT. AFTER FLYING 1 HR AND 5 MIN THE PILOT LANDED AND REFUELED THE HELICOPTER AT A LANDING AREA 2 MI WEST OF THE ACCIDENT SITE. AFTER REFUELING HE DEPARTED ON THE ACCIDENT FLT. VIDEO TAPE SHOWED THE HELICOPTER BEGAN TO HOVER OVER THE TRANSMISSION STANCHION WITH THE CONDUCTOR ATTACHED TO THE LONG LINE. THE CONDUCTOR BECAME ENTANGLED WITH THE STANCHION'S CROSS BAR AND THE HELICOPTER BEGAN TO CLIMB WITH THE CONDUCTOR ATTACHED AND ENTANGLED WITH THE CROSSBAR. THE HELICOPTER THEN BEGAN TO SPIN TO THE LEFT IN A NOSE DOWN ATTITUDE AND CRASH.

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

IMPROPER PLANNING/DECISION BY THE PILOT, AND HIS DELAY IN JETTISONING THE LOAD.

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