Primary finding
Probable cause
The pilot undergoing instruction’s excessive application of asymmetrical braking during landing, which resulted in a ground loop.
Investigator assessment
Analysis narrative
According to the flight instructor, during the landing roll the pilot undergoing instruction applied asymmetrical braking and locked the left brake. This led to a ground loop. The airplane sustained substantial damage to the right wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.