Glider Tow Rope Failure During Dual Instructional Flight Results in Hard Landing (N3613F)

What happened

During an initial climbout phase of a dual instructional glider flight, the aircraft was being towed to altitude. As the glider reached an altitude of approximately 50 to 100 feet above ground level (AGL), the tow rope connecting the glider to the tow plane failed. This sudden loss of tension necessitated an immediate emergency response from the crew.

The instructor pilot initiated a forced landing procedure, directing the aircraft toward the edge of a cornfield situated to the right side of the runway. The approach was unpowered and critical due to the low altitude at which the failure occurred. Upon reaching the ground, the touchdown was described by both pilots as abrupt. They noted that the vertical velocity upon impact was significantly higher than normal, indicating a hard landing despite the pilot's efforts to manage the descent rate.