NTSB Identification: DEN85LA020.
The docket is stored on NTSB microfiche number 25935.
Nonscheduled 14 CFR
Accident occurred Friday, October 26, 1984 in LIMA, MT
Aircraft: AEROSPATIALE SA316B, registration: N8624
Injuries: 1 Minor,4 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.

APRX 35 MIN PRIOR TO THE ACCIDENT THE SEISMIC OPERATIONS BEING CONDUCTED ABOUT 10 MI NE WERE SECURED DUE TO POOR VISIBILITY AND HIGH WINDS. THE PLT ESTIMATED WIND TO HAVE BEEN FROM 180 DEG AT 40 KTS GUSTING TO 60. AS THE PLT APPROACHED THE LANDING ZONE DOWNWIND THE HELICOPTER BEGAN TO SETTLE AND THE PLT BEGAN A RIGHT TURN INTO THE WIND. ACCORDING TO THE PLT AT APRX 75 FT AGL HE BEGAN TO LOSE CONTROL OF THE ACFT. NEARING THE GROUND HE PULLED ALL AVAILABLE COLLECTIVE PITCH BUT COULD NOT CONTROL THE SINK RATE. ON CONTACT WITH THE GROUND THE TAIL SPUN 20 TO 30 DEG TO THE LEFT AND THE ACFT ROLLED OVER ONTO IT'S RIGHT SIDE.

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

WEATHER CONDITION..HIGH WIND

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

PROPER DESCENT RATE..UNCONTROLLED..PILOT IN COMMAND

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

COMPENSATION FOR WIND CONDITIONS..IMPROPER..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..GUSTS



Contributing Factors

FLIGHT INTO KNOWN ADVERSE WEATHER..PERFORMED..PILOT IN COMMAND


Contributing Factors

LACK OF TOTAL EXPERIENCE IN TYPE OF AIRCRAFT..PILOT IN COMMAND

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