NTSB Identification: SEA91FA184.
The docket is stored on NTSB microfiche number 44411.
Accident occurred Monday, July 22, 1991 in TOUTLE, WA
Probable Cause Approval Date: 12/04/1992
Aircraft: BELL 206B, registration: N276KA
Injuries: 1 Fatal,1 Serious,2 Minor,1 Uninjured.
NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.
DURING A LOCAL SIGHT-SEEING FLIGHT, THE PILOT INITIATED A RIGHT DESCENDING TURN TO VIEW A HERD OF ELK NEAR A DRY RIVER BED. THE PASSENGERS STATED THAT THE FIRST TURN WAS NORMAL; HOWEVER, THE HELICOPTER CONTINUED TO TURN WHICH ACCELERATED WITH EACH ROTATION UNTIL THE HELICOPTER COLLIDED INTO THE DRY RIVER BED.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: FAILURE OF THE PILOT TO MAINTAIN AIRSPEED AND CORRECT FOR THE RIGHT YAWING CONDITION. FACTORS TO THE ACCIDENT WERE: INADEQUATE COMPENSATION FOR WIND CONDITIONS, DIVERTED ATTENTION, AND LACK OF TOTAL EXPEREINCE IN TYPE OF AIRCRAFT.
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