Primary finding
Probable cause
The airplane’s encounter with a downdraft while maneuvering at low altitude, which resulted in a forced landing and collision with terrain.
Investigator assessment
Analysis narrative
The pilot reported that, while on approach to a remote airstrip in an area of mountainous terrain, he encountered a strong downdraft that forced the airplane into an area of rough and uneven terrain, resulting in substantial damage to the wings and lift struts. The pilot reported that there were no preimpact mechanical failures or malfunctions that would have precluded normal operation.