Casualties unknown

Glider Pilot Overshoots Runway During First Solo Flight (N96AS)

Chester, SC, US

On August 20, 1985, a Let L-13 (registration N96AS) was involved in an aviation accident near Chester, SC. Investigators recorded the probable cause as: The pilot's inability to adequately compensate for a rapid altitude loss due to being misled by the stiff operation of the spoilers during his first solo flight in this aircraft. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-06-10Data APIEditorial standards

A glider pilot landed short of the runway during his first solo flight in this aircraft, citing difficulty controlling spoilers due to their stiffness on final approach.

What happened

The glider touched down approximately 150 feet beyond the end of the runway. This incident occurred during the pilot's first solo flight in this specific aircraft type. While on final approach at a speed of 55 mph, the pilot observed a rapid decrease in altitude. In response to the sinking airspeed and descent rate, he attempted to adjust the spoiler position to manage the glide path.

The pilot reported that the mechanical resistance of the spoilers was unusually stiff. He stated that this stiffness misled him regarding the actual position of the flight controls, causing a delay or error in his compensation efforts. The combination of the rapid altitude loss and the control feedback issues resulted in the landing occurring past the intended touchdown point.

The investigation

Examination of the event focused on the pilot's account of the control forces. The primary finding was the discrepancy between the pilot's expectation of control response and the actual mechanical feel of the spoilers. No mechanical failure of the glider itself was cited as a cause, but rather the pilot's interpretation of the control stiffness during a critical phase of flight.

Probable cause

The pilot's inability to adequately compensate for a rapid altitude loss due to being misled by the stiff operation of the spoilers during his first solo flight in this aircraft.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X37355. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.