NTSB Factual Report

The pilot reported that during takeoff in gusty crosswind conditions, the wind changed from a left crosswind to a left quartering tail wind. The tail of the airplane was pushed to the right; the nose turned to the left. He further reported that the left wing lifted, which caused the airplane to wheelbarrow off the runway to the left/right and impact an airport sign. Following the impact, the right fuel tank ruptured, the wing caught fire, and the airplane came to a stop. The right wing sustained substantial damage.

The pilot reported that there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

NTSB Probable Cause

The pilot's failure to maintain directional control during takeoff in crosswind conditions, which resulted in runway excursion, impact with terrain and an airport sign, and a postimpact fire.