Primary finding
Probable cause
The pilot's failure to maintain directional control during takeoff due to his abrupt advancing of the throttle.
Investigator assessment
Analysis narrative
The pilot stated that, when starting to takeoff in the tailwheel-equipped airplane, he immediately applied full engine power and lost control of the airplane. The airplane departed the runway to the left and impacted a visual approach slope indicator control box, resulting in substantial damage to the right wing spar. The pilot reported that there were no preimpact mechanical malfunctions or anomalies with the airplane. He additionally stated that the accident may have been prevented if he had applied the throttle gradually.
Source record
Factual narrative
The pilot stated that, when starting to takeoff in the tailwheel-equipped airplane he immediately applied full throttle and lost control of the airplane. The airplane departed the runway to the left and impacted a visual approach slope indicator control box, resulting in substantial damage to the right wing spar. The pilot reported that there were no mechanical malfunctions or anomalies with the airplane, and said that the accident may have been prevented if he had applied the throttle gradually.