NTSB Identification: DEN02LA075.
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Accident occurred Saturday, July 13, 2002 in Worland, WY
Probable Cause Approval Date: 12/06/2002
Aircraft: American General Aircraft AA5B, registration: N28717
Injuries: 1 Serious,1 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 pilot said he was crossing a mountain range approximately 800 feet above each series of mountains. A downdraft caused the airplane to lose both altitude and airspeed. Rising terrain prevented him from completing a 180-degree turn and the airplane struck a tree then impacted the ground.

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

the pilot's selection of an inadequate altitude for crossing mountainous terrain, resulting in a collision with trees. A contributing factor was the downdraft.

Full narrative available

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