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Atlas / NTSB / WPR11CA343

NTSB CAROL · Event

Event WPR11CA343

2011-07-19 Colville, Washington, United States Airport · 63S None 1 aircraft Status: Completed

Aircraft involved

Probable cause & findings

The pilot’s inadequate braking after touchdown, which resulted in a runway excursion.

Factual narrative

The pilot reported that it had just rained on the 2,695-foot-long runway that he intended to land on. During the landing roll, the pilot applied moderate braking but he did not sense that the airplane was decelerating sufficiently. The pilot stated that his knowledge of this airport made him aware of a 150 foot drop off located at the end of the runway. With the end of the runway approaching, the pilot elected to turn left off the runway and he used the right engine to assist the turn. The airplane veered left off the end of the runway onto a gravel area. When the airplane entered the gravel area the right main landing gear collapsed, resulting in substantial damage to the outboard edge of the aileron, and damage to the landing gear and top of the inboard wing. The pilot said there were no preimpact mechanical malfunctions or failures. The pilot stated that during the landing roll, he did not apply maximum braking to let the airplane slow down on its own. As the airplane approached the end of the runway, the pilot realized that the airplane would not stop in time and used right engine differential power to turn left and avoid a 150-foot drop-off located at the end of the runway. The airplane veered left off the end of the runway onto a gravel area. When the airplane entered the gravel area the right main landing gear collapsed, resulting in substantial damage to the outboard edge of the aileron, and damage to the landing gear and top of the inboard wing. The pilot reported no preimpact mechanical malfunctions with the airplane. 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 Aircraft-Aircraft oper/perf/capability-Performance/control parameters-(general)-Not attained/maintained - C
  • Environmental issues-Physical environment-Runway/land/takeoff/taxi surfa-Wet-Effect on operation
  • C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C

Verbatim from NTSB's published report. Source file NTSB_2011_WPR11CA343.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 (runway excursion). 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 ↗