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Glider Crashes During Landing Practice Due to Loss of Lift (N2706H)

Erwinna, PA, US

On April 17, 1983, a Schweizer SGS-2-33A (registration N2706H) was involved in an aviation accident near Erwinna, PA. No fatalities were reported. Investigators recorded the probable cause as: The pilot's failure to maintain adequate airspeed during the final approach, which resulted in a loss of lift and collision with trees. 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 2026-06-23Data APIEditorial standards

A glider lost lift on final approach during dual instruction, striking tree tops and landing short of the runway with significant damage to the wings and nose.

What happened

The aircraft was engaged in a dual instructional flight focused specifically on landing practice procedures. During the final approach phase, the pilot experienced excessive sink rates which resulted in a loss of lift. As the glider descended below the intended flight path, it clipped the tops of nearby trees. The aircraft subsequently landed short of the intended landing area.

The investigation

Post-accident examination revealed that the wings and nose of the aircraft sustained damage from the impact with the terrain and vegetation. Weather conditions at the time included wind from 320 degrees at 12 knots, gusting to 16 knots.

Findings

The primary factor contributing to the accident was the loss of lift during the final approach. The pilot's inability to maintain sufficient airspeed or altitude resulted in the collision with tree tops and the subsequent hard landing short of the runway.

Probable cause

The pilot's failure to maintain adequate airspeed during the final approach, which resulted in a loss of lift and collision with trees.

Frequently asked questions

What happened in the 17 Apr 1983 Schweizer SGS-2-33A accident near Erwinna, PA?

A glider lost lift on final approach during dual instruction, striking tree tops and landing short of the runway with significant damage to the wings and nose.

Were there any fatalities in the 17 Apr 1983 Schweizer SGS-2-33A accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 17 Apr 1983 involved a Schweizer SGS-2-33A, registration N2706H, at Erwinna, PA.

What was the probable cause of the accident?

The pilot's failure to maintain adequate airspeed during the final approach, which resulted in a loss of lift and collision with trees.

More accident analyses

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X42812. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.