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ANC23LA086

2023-09-24 · Trimble River Valley, Alaska, United States · None · 1 aircraft · Status: Completed

Aircraft involved

Probable cause & findings

The pilot’s selection of unsuitable terrain for landing, which resulted in the left main landing gear (MLG) tire impacting a rock, resulting in the separation of the MLG wheel, and the subsequent loss of directional control.

Factual narrative

The pilot reported that he was landing at a remote off airport site. After touchdown, the left main landing gear contacted a large rock resulting in the left wheel separating from the main landing gear. Subsequently, the airplane veered left, nosed down, and both wings struck the ground resulting in substantial damage. The pilot reported that there were no pre-accident mechanical failures or malfunctions with the airplane that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

FAA avdata. C = Cause, F = Factor.

  • — Personnel issues-Action/decision-Info processing/decision-Decision making/judgment-Pilot
  • — Environmental issues-Physical environment-Runway/land/takeoff/taxi surface-(general)-Decision related to condition
  • — Environmental issues-Physical environment-Object/animal/substance-Debris/dirt/foreign object-Effect on operation

Verbatim from NTSB's published report. Source file NTSB_2023_ANC23LA086.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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