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Atlas / NTSB / GAA17CA420

NTSB CAROL · Event

Event GAA17CA420

2017-07-17 Lone Rock, Wisconsin, United States Airport · LNR None 1 aircraft Status: Completed

Aircraft involved

Probable cause & findings

The student pilot’s improper landing flare, which resulted in a bounced landing and subsequent loss of directional control and runway excursion during the aborted landing. Contributing to the improper landing flare was the student’s distraction by a deer running across the runway.

Factual narrative

The solo student pilot reported that he was practicing a stop and go landing on the asphalt runway. He recalled that the downwind leg of the approach pattern, headed into a bright sunset. On short final, "a medium sized, reddish brown animal ran across the runway near the numbers from right to left." The pilot over flew the animal and the airplane bounced upon touchdown. He applied full power to abort the landing, but the airplane veered left and exited the left side of the runway. About 40-feet from the runway, the airplane encountered soft soil and nosed over. During a conversation with the National Transportation Safety Board Investigator-in-charge, the student pilot stated that he may have become fixated on the animal during the approach. He could not recall whether he manipulated the yoke to avoid the animal. The airplane sustained substantial damage to the left-wing strut. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. The solo student pilot reported that he was practicing a stop-and-go landing on the asphalt runway. He recalled that, while on the downwind leg of the approach pattern, he was headed into a bright sunset. On short final, "a medium sized, reddish brown animal ran across the runway near the numbers from right to left." The student overflew the animal, and the airplane bounced upon touchdown. He applied full power to abort the landing, but the airplane veered left and exited the left side of the runway. About 40 ft from the runway, the airplane encountered soft soil and nosed over. During a conversation with the National Transportation Safety Board investigator-in-charge, the student pilot stated that he may have become fixated on the animal during the approach. He could not recall whether he manipulated the yoke to avoid the animal. The airplane sustained substantial damage to the left-wing strut. The student reported that there were no preaccident mechanical malfunctions or failures 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).

  • C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Landing flare-Not attained/maintained - C
  • C Personnel issues-Task performance-Use of equip/info-Aircraft control-Student/instructed pilot - C
  • C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C
  • F Personnel issues-Psychological-Attention/monitoring-(general)-Student/instructed pilot - F
  • Environmental issues-Physical environment-Object/animal/substance-Animal(s)/bird(s)-Effect on operation
  • Environmental issues-Physical environment-Runway/land/takeoff/taxi surface-Soft surface-Contributed to outcome

Verbatim from NTSB's published report. Source file NTSB_2017_GAA17CA420.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 (icing, 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 ↗