Skip to content

Atlas / NTSB / WPR24LA021

NTSB CAROL · Event

Event WPR24LA021

2023-10-19 The Dalles, Oregon, United States Airport · DLS Minor 1 aircraft Status: Completed

Aircraft involved

Probable cause & findings

The pilot’s encounter with severe turbulence at night which resulted in an extended downwind and collision with wires during the base turn.

Factual narrative

The pilot reported that the airplane encountered “extreme” turbulence while on the approach to an intermediate stopover airport during a night cross-country flight. The pilot extended the downwind leg of the traffic pattern to stabilize the airplane, and during the base leg turn, the airplane struck a wire and subsequently impacted terrain. The airplane sustained substantial damage to both wings and fuselage. The airport is located at an elevation of 246 ft mean sea level (msl) in a major river gorge. The northern ridge line above the airport is about 2,900 ft msl, and the southern ridge line is about 1,300 ft msl. The accident location is located about 2 miles south of the airport at an estimated evaluation of about 650 ft msl. High tension powerlines are positioned south of the airport along the southern ridge. According to the United States Navy Observatory, the official sunset was at 17:12 Pacific daylight time (PDT), the official end of civil twilight was at 17:42 PDT and the official moon set was at 20:02 PDT. The night cross-county training flight was part of the pilot’s training curriculum for her commercial, airplane single engine land certificate. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane 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-Physical environment-Object/animal/substance-Wire-Effect on equipment
  • Environmental issues-Conditions/weather/phenomena-Turbulence-Terrain induced turbulence-Effect on equipment
  • Aircraft-Aircraft oper/perf/capability-Performance/control parameters-(general)-Attain/maintain not possible

Verbatim from NTSB's published report. Source file NTSB_2023_WPR24LA021.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type or causal vocabulary (turbulence). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗