Casualties unknown

Glider Fence Impact Following Simulated Towline Break (N33950)

Warrensburg, MO, US

On July 29, 2004, a Schweizer SGS 2-33 (registration N33950) was involved in an aviation accident near Warrensburg, MO. Investigators recorded the probable cause as: A gust of wind that raised the right wing during landing, causing the left wing to contact the ground and veer into tall grass before impacting a fence. 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 2026-06-19Data APIEditorial standards

A glider struck a fence after landing from a simulated towline break. A wind gust raised the right wing, causing the left wing to contact the ground and veer into vegetation before hitting the barrier.

What happened

The accident occurred during a flight operation involving a glider that was engaged in a simulated towline break scenario. Following this maneuver, the pilot initiated a landing sequence. During the final phase of the approach, the pilot reported encountering a gust of wind that had a significant aerodynamic effect on the aircraft's attitude.

Specifically, the wind gust raised the right wing of the glider. This asymmetric lift condition caused the left wingtip to make contact with the ground surface. The terrain at the landing site consisted of grass that was approximately 8 to 10 inches in height. Upon initial contact, the vegetation affected the glider's directional control, causing it to veer sharply to the left.

Following this deviation from the intended flight path, the glider lost further lateral clearance and subsequently impacted a barbed-wire fence. The impact with the fence marked the end of the ground roll. No further details regarding structural damage or pilot injury were provided in the source narrative beyond the physical sequence of events described above.

The investigation

The available source material does not contain specific findings from a mechanical examination or post-accident inspection of the glider components. The account relies primarily on the pilot's report of the aerodynamic and environmental conditions encountered during the landing phase.

Probable cause

A gust of wind that raised the right wing during landing, causing the left wing to contact the ground and veer into tall grass before impacting a fence.

Frequently asked questions

What happened in the 29 Jul 2004 Schweizer SGS 2-33 accident near Warrensburg, MO?

A glider struck a fence after landing from a simulated towline break. A wind gust raised the right wing, causing the left wing to contact the ground and veer into vegetation before hitting the barrier.

What aircraft was involved and where did it happen?

The accident on 29 Jul 2004 involved a Schweizer SGS 2-33, registration N33950, at Warrensburg, MO.

What was the probable cause of the accident?

A gust of wind that raised the right wing during landing, causing the left wing to contact the ground and veer into tall grass before impacting a fence.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20040917X01460. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.