Boeing A75N1(PT17) N4777V accident near Mesa, Arizona

Probable cause

The flight instructor’s failure to maintain directional control during the landing roll, which resulted in a ground loop.

NTSB analysis

The flight instructor of the tailwheel-equipped airplane reported that, while demonstrating a wheel landing during an instructional flight with a student in the rear seat, the nose swerved to the right upon lowering the tailwheel. The pilot corrected with left rudder input, but the airplane ground looped to the right, resulting in substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Text from the NTSB. Open the NTSB docket for WPR24LA015 for the full record.