Primary finding
Probable cause
The pilot's failure to maintain aircraft control while ridge-soaring in gusty wind conditions.
Investigator assessment
Analysis narrative
The pilot was ridge-soaring in his glider near a mountain peak in gusty wind conditions, when he was blown into trees. The glider sustained substantial damage to the airframe and wings. The pilot reported no mechanical problems with the glider. He said that he was unfamiliar with the terrain and the wind gusts and down-drafts were higher than he anticipated.
Source record
Factual narrative
The pilot was ridge-soaring in his glider near a mountain peak in gusty wind conditions, when he was blown into trees. The glider sustained substantial damage to the airframe and wings. The pilot reported no mechanical problems with the glider. He said that he was unfamiliar with the terrain and the wind gusts and down-drafts were higher than he anticipated.