NTSB Identification: DEN82FA054
14 CFR Part 91: General Aviation
Accident occurred Friday, April 02, 1982 in LAMAR, CO
Probable Cause Approval Date: 04/02/1983
Aircraft: BEECH M35, registration: N9733R
Injuries: 4 Fatal.

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 THE WX BRIEFING THE PLT WAS ADVISED THAT THE WX ALONG HIS PROPOSED ROUTE OF FLT WOULD BE GENERALLY GOOD VFR WITH THE EXCEPTION OF POSSIBLE TURBULENCE & THAT BLOWING DUST WOULD BE THE BIG PROBLEM. THERE WERE PIREPS OF 65K WINDS AT 3,000 FT OVER OKLAHOMA CITY WHICH WAS FORECASTING VISIBILITIES DROPPING TO 3-4 MI IN BLOWING DUST BY NOON. THE PLT'S FORMER FLT EXAMINER TRIED TO CONVINCE THE PLT TO POSTPONE THE TRIP DUE TO HIGH WINDS ENROUTE. AT APPROXIMATELY 1015 A GROUND WITNES ON A ROAD NEAR THE LAMAR ARPT STATED HE SAW A DUST CLOUD NORTH OF TOWN RISING TO AN ALTITUDE OF APPROXIMATELY 2,000 FT. BY THE TIME THE WITNESS REACHED THE ARPT VISIBILITY WAS LESS THAN 100 FT WITH AN ESTIMATED WIND OF 60 MPH. ANOTHER WITNESS WHO HEARD THE CRASH SAID IT WAS TOO DIRTY TO SEE ANYTHING. THE LA JUNTA FSS, LOCATED APPROXIMATELY 32 MI WEST OF THE ACCIDENT SITE, 0958 & 1058 OBSERVATIONS INCLUDED SURFACE WINDS GUSTING TO 57K & SKY COVERAGE OF 0.6.

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

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

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

FLIGHT CONTROLS..IMPROPER USE OF..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..TURBULENCE


Contributing Factors

WEATHER CONDITION..HIGH WIND


Contributing Factors

WEATHER CONDITION..OBSCURATION


Contributing Factors

OVERCONFIDENCE IN PERSONAL ABILITY..PILOT IN COMMAND


Contributing Factors

LACK OF TOTAL INSTRUMENT TIME..PILOT IN COMMAND


Contributing Factors

SPATIAL DISORIENTATION..PILOT IN COMMAND

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