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WPR11CA286

2011-06-24 · Circle, Montana, United States · None · 1 aircraft · Status: Completed

Airport 4U6

Aircraft involved

Probable cause & findings

The pilot's failure to attain and maintain an adequate airspeed during initial climb.

Factual narrative

The pilot stated that he loaded the hopper of the airplane with chemicals for an agricultural flight and proceeded to depart on runway 30. During the climb out, at approximately 50 feet above ground level (agl), the pilot noticed a tailwind from the southwest and at 60 feet agl noticed that his climb rate had diminished. The pilot attempted to initiate a forced landing in the wash across a main road. On touchdown the main landing gear broke off and the airplane proceeded inside a gully where the wings sustained substantial damage. The pilot reported no mechanical issues or malfunctions that would have precluded normal flight. At the time of the accident, the density altitude was approximately 3,600 ft. The pilot stated that he loaded the hopper of the airplane with chemicals for an agricultural flight and proceeded to take off. During the initial climb, at approximately 50 feet above ground level (agl), the pilot noticed a tailwind from the southwest and at 60 feet agl noticed that his climb rate had diminished. He performed a forced landing in the wash across a main road, and on touchdown the main landing gear separated and the airplane proceeded inside a gully where the wings sustained substantial damage. At the time of the accident, the density altitude was approximately 3,600 feet. The pilot reported no mechanical issues or malfunctions that would have precluded normal operation and he felt that he was unable to attain an adequate flying speed due to the high humidity. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

FAA avdata. C = Cause, F = Factor.

  • C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Airspeed-Not attained/maintained - C
  • C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C

Verbatim from NTSB's published report. Source file NTSB_2011_WPR11CA286.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.