Casualties unknown

Glider Collides with Tree on Final Approach Due to Dusk Glare (N15CB)

Benton, TN, US

On October 30, 1996, a Let L-13 (registration N15CB) operated by Wendylene, Inc was involved in an aviation accident near Benton, TN. Investigators recorded the probable cause as: failure of the flight crew to maintain altitude/clearance above runway obstacles, and inadequate supervision by the flight instructor. Factors relating to the accident were sunglare on the canopy, and the proximity of obstacles (trees) to the runway. 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

During final approach to runway 21, a glider struck a tree about 300 feet from the runway threshold. The instructor and student reported they did not see the tree due to dusk lighting conditions and glare on the canopy.

Incident Overview

A glider collided with a tree while on final approach to runway 21. The incident occurred during dusk hours, with the sun low on the horizon, creating glare on the glider canopy. According to the instructor and student aboard, the tree was not visible due to these lighting conditions.

Location Details

The tree was located approximately 300 feet from the runway threshold. Runway obstacle information indicated that the runway threshold was displaced by 200 feet, meaning the usable landing area began further down the runway. The exact position of the tree relative to the displaced threshold is not specified in the source.

Pilot Accounts

Both the instructor and the student stated that they did not see the tree before impact. The instructor highlighted that the low sun angle and resulting glare on the canopy obscured the tree from view. No further details on the approach or any evasive actions were provided.

Post-Incident Observations

The collision with the tree occurred during the landing phase. The source does not describe the extent of damage to the glider or any injuries to occupants. Landing conditions were characterized by dusk lighting, with no mention of other weather factors or ATC involvement.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001208X06844. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.