NTSB Identification: SEA04CA185.
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Accident occurred Tuesday, September 07, 2004 in McCall, ID
Probable Cause Approval Date: 12/03/2004
Aircraft: Cessna 180H, registration: N3458Y
Injuries: 1 Minor.
NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.
While flying base leg into Wilson Bar Airstrip, the pilot said he encountered "several moderate downdrafts." He said that he flew the final approach with 65 to 70 miles per hour (mph), but encountered a severe downdraft on short final (there was an approximate 35 foot bank from the river to the end of the runway). He applied full power, "was able to keep the aircraft from being driven into the river," but now had "excessive" airspeed. He landed long (the runway was 1,500 feet in length), and overran the end of the runway and nosed over. The engine's mount, firewall, and cowling were bent, the vertical stabilizer and rudder were bent, and the right wing and right horizontal stabilizer were bent and wrinkled. In the AirNav.com additional remarks for Wilson Bar USFS Airstrip it states: "Strip downdrafts prevalent on approach to runway 24."
The National Transportation Safety Board determines the probable cause(s) of this accident to be: The pilot's failure to attain proper touchdown point for landing on the backcountry airstrip. Contributing factors were downdraft weather conditions and the pilot's excessive speed for landing. Full narrative available
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