Incident Overview
A flight instructor of a glider reported an accident during landing. According to the instructor, while the glider was approximately 100 feet above the ground, a sink rate began to develop. The instructor then took over the flight controls and closed the spoilers. Subsequently, the glider impacted the airport perimeter fence and landed short of the runway. After impact, the glider slid into a culvert.
Damage Assessment
The glider sustained substantial damage to the empennage as a result of the accident.
Reporting Deficiency
The flight instructor failed to submit the NTSB Form 6120.1 Pilot/Operator Aircraft Accident/Incident Report, as required by regulations.