Overview
A training flight ended with an off-runway landing and subsequent ground loop after the student pilot's control inputs were deemed insufficient by the instructor. The aircraft flipped over after the engine gear sheared off.
Instructor's Account
According to the instructor pilot, the student failed to reduce back pressure enough and did not apply sufficient right rudder after the aircraft became airborne. This caused the aircraft to drift left and approach a stall. The instructor then assumed control and performed a landing.
Landing and Ground Loop
During the landing, the left main gear touched down approximately one foot to the left of the asphalt runway. The soft ground created drag that pulled the aircraft leftwards as it decelerated. The drag was strong enough to shear off the engine gear, and the aircraft flipped over.
Damage
The aircraft flipped over, resulting in damage to the engine gear and structure. The instructor pilot reported the sequence of events, noting that the student's control inputs initiated the chain of events.