NTSB Identification: DEN02GA102.
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Accident occurred Wednesday, September 04, 2002 in Howard, CO
Probable Cause Approval Date: 11/25/2003
Aircraft: Cessna A185F, registration: N24GS
Injuries: 1 Fatal,1 Serious.

: 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 public aircraft accident report.

the pilot was flying to a high altitude lake (elevation 11,300 feet) to aerially plant fish for the State of Colorado. The winds at the lower altitudes were calm. At 11,429 feet, data collected from an onboard GPS recorder, indicated that the airplane performed an abrupt 90 degree turn to the left, and impacted the adjacent ridge. Three other Colorado State pilots, flying the same mission in the area, reported wind shear and moderate turbulence from 11,500 to 12,500 feet. The density altitude was calculated to be 12,350 feet.

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

the pilot's failure to maintain clearance of the terrain. Contributing factors were the clear air turbulent weather condition, and the high density altitude condition.

Full narrative available

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