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Atlas / NTSB / WPR14CA317

NTSB CAROL · Event

Event WPR14CA317

2014-07-28 Hazelton, Idaho, United States Airport · U94 None 1 aircraft Status: Completed

Aircraft involved

Probable cause & findings

The pilot's failure to maintain aircraft control during takeoff roll in variable wind conditions.

Factual narrative

The pilot reported that during takeoff roll in a tail wheeled airplane for the aerial application flight, as he rotated the airplane, it would not lift off and he applied full flaps. The airplane would still not lift off the runway, so he jettisoned the entire load from the hopper. Subsequently, the airplane pitched up and despite his control inputs, stalled, and impacted the ground. Substantial damage was sustained to the wings and fuselage. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. The pilot added that he felt that either a downdraft or change in wind direction occurred at the time of the accident. The pilot reported that during takeoff roll in a tail wheeled airplane for the aerial application flight, as he rotated the airplane, it would not lift off and he applied full flaps. The airplane would still not lift off the runway, so he jettisoned the entire load from the hopper. Subsequently, the airplane pitched up and despite his control inputs, stalled, and impacted the ground. Substantial damage was sustained to the wings and fuselage. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. The pilot added that he felt that either a downdraft or change in wind direction occurred at the time of the accident. 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).

  • C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
  • C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Pitch control-Not attained/maintained - C
  • Environmental issues-Conditions/weather/phenomena-Wind-Variable wind-Effect on operation

Verbatim from NTSB's published report. Source file NTSB_2014_WPR14CA317.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 (stall). 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 ↗