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Atlas / NTSB / WPR21LA290

NTSB CAROL · Event

Event WPR21LA290

2021-07-25 Levan, Utah, United States Minor 1 aircraft Status: Completed

Registry · N4446Y

FAA Aircraft Registry record.

Make / Model

BURKHART GROB G 103 TWIN II

Year of manufacture

1983 · 38 years old at event

Engine

NONE NONE

Seats / Engines

2 seats · 1 engine

Last airworthiness date

19830913

ADS-B equipped

Yes — Mode-S A55CBA

Registrant of record

UTAH SOARING ASSOCIATION

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The glider’s encounter with atmospheric conditions where the lift was not sufficient to maintain flight which resulted in an off-airport landing and a collision with a fence.

Factual narrative

The pilot reported that during the flight, the glider encountered insufficient lift to maintain flight and he decided to land off airport. He performed a high recon of the area and selected a landing site on the north side of a local reservoir, along the shoreline. While on downwind for the intended landing area, he did not see any obstacles, and performed a teardrop turn to final. The glider touched down in the approximate area he intended to, however, during landing roll, the glider collided with a barbed wire fence and sustained substantial damage to the right wing and the rear canopy. The pilot reported that there were no preaccident mechanical failures or malfunctions with the glider that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).

  • Environmental issues-Conditions/weather/phenomena-Temp/humidity/pressure-Thermal lifting-Effect on operation
  • Environmental issues-Physical environment-Object/animal/substance-Fence/fence post-Effect on equipment
  • Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Altitude-Attain/maintain not possible

Verbatim from NTSB's published report. Source file NTSB_2021_WPR21LA290.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.