NTSB Identification: DEN84LA003.
The docket is stored on NTSB microfiche number 22193.
Nonscheduled 14 CFR
Accident occurred Tuesday, October 04, 1983 in FORT BRIDGER, WY
Aircraft: BELL 206B, registration: N57556
Injuries: 3 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 ACFT WAS ENROUTE FROM A POWDER MAGAZINE TO A STAGING AREA ABOUT 2 MI AWAY DURING A SEISMIC EXPLORATION OPERATION. THE PLT STATED THAT WHILE 100-200 FT AGL HE INITIATED A RIGHT TURN OF 60 DEG OF BANK TOWARDS A BOWL FORMED BY LOW LYING HILLS TO OBSERVE A HERD OF ANTELOPE. THE ACFT ENCOUNTERED A DOWNDRAFT ON THE LEEWARD SIDE OF THE HILL CAUSING THE ACFT TO SETTLE INTO SAGEBRUSH. THE PLT ESTIMATED HIS AIRSPEED TO BE 80 KTS AT IMPACT.

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

ALTITUDE..INADEQUATE..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..MOUNTAINOUS/HILLY


Contributing Factors

TERRAIN CONDITION..RISING


Contributing Factors

WEATHER CONDITION..DOWNDRAFT

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