NTSB Identification: LAX84LA329.
The docket is stored on NTSB microfiche number 24486.
Accident occurred Saturday, June 02, 1984 in ALLEGHENY, CA
Aircraft: BELL 206, registration: N9722R
Injuries: 2 Minor.

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 WAS DELIVERING SUPPLIES FROM A MOUNTAIN SITE TO A RIVER WORK SITE. HE STATED THAT ON HIS 10TH & LAST FLT, THE WIND CAUSED THE HELICOPTER & EXTERNAL LOAD COMBINATION TO SHIFT LATERALLY. AT THAT TIME, THE LOAD/LINE BECAME ENTANGLED IN A TREE. THE HELICOPTER BEGAN MOVING IN AN ARC & SUBSEQUENTLY CRASHED IN THE RIVER. THE PLT STATED THAT HE WAS UNABLE TO RELEASE THE LOAD; ALTHO, HE HAD PREVIOUSLY CHECKED THE ELECTRICAL & MANUAL RELEASE MECHANISMS & THEY OPERATED NORMALLY. HE ESTIMATED THAT THE WIND WAS FROM 050 DEG AT 5 GUSTING 7 KTS. THE ELEVATION OF THE CRASH SITE WAS ABOUT 3100 FT.

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

COMPENSATION FOR WIND CONDITIONS..INADEQUATE..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

WEATHER CONDITION..HIGH DENSITY ALTITUDE


Contributing Factors

WEATHER CONDITION..GUSTS


Contributing Factors

OBJECT..TREE(S)

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