Incident Overview
An instructor pilot was at the controls of an airplane during a demonstration of a touch and go landing with a student pilot. The aircraft collided with unmarked power lines while attempting to land on an undesignated grass strip. Following the collision, the airplane came to rest inverted on the ground.
Damage Assessment
Examination of the airplane revealed substantial damage to the fuselage and empennage. The instructor pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.
Operational Context
The flight was a training exercise involving a touch and go landing. The instructor was demonstrating the maneuver to the student pilot at the time of the incident. The landing was attempted on a grass strip that was not designated for aviation use. The power lines involved in the collision were not marked.
Pilot Statements
The instructor pilot provided a statement indicating that he was operating the controls during the demonstration. He did not report any issues with the aircraft's systems or performance prior to the collision.