Incident Overview
A flight instructor reported that, with a pilot receiving instruction at the controls, the airplane veered to the left during the landing roll. The instructor immediately took control, applied full power, and reduced flaps. Despite these actions, the airplane continued to veer left, departed the runway surface, and struck a ditch. The impact caused the nose landing gear to collapse, and the airplane came to rest inverted.
Damage Assessment
The airplane sustained substantial damage to the left wing. No other damage was specified in the report.
Instructor's Account
The instructor stated that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.
Weather Conditions
The instructor reported the wind as 170° at 8 knots. The automated weather observation station at the airport, recording about 15 minutes after the accident, indicated wind from 140° at 4 knots. The pilot had landed the airplane on runway 19.