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GAA18CA507

2018-08-23 · Spring Branch, Texas, United States · Minor · 1 aircraft · Status: Completed

Airport 1T7

Aircraft involved

Probable cause & findings

The pilot's failure to maintain the proper glidepath and his subsequent abrupt maneuver to avoid trees, which led to the exceedance of the airplane's critical angle of attack and resulted in an aerodynamic stall during landing and a subsequent loss of directional control.

Factual narrative

The pilot reported that on short final, the airplane was too low, too slow, and right of the runway centerline, and that he overcorrected to clear trees located at the approach end of runway 12. Subsequently, the airplane stalled and touched down on the upsloping approach end of the runway. The right wing struck rising terrain in the safety area on the right side of the runway, and the airplane skidded across the grass safety area and came to rest on the parallel taxiway. The airplane sustained substantial damage to both wings and the engine mounts. The runway had rising terrain at both the approach and departure ends. The airport facility directory identifies that runway 12 had 20-foot tall trees that are 25 feet from the runway threshold and requires a 4:1 glide slope to remain clear. The pilot reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation. The pilot reported that, on short final, the airplane was too low, too slow, and right of the runway centerline, and that he overcorrected to clear trees located at the approach end of runway 12. Subsequently, the airplane stalled and touched down on the upsloping approach end of the runway. The right wing struck rising terrain in the safety area on the right side of the runway, and the airplane skidded across the grass safety area and came to rest on the parallel taxiway. The airplane sustained substantial damage to both wings and the engine mounts. The runway had rising terrain at both the approach and departure ends. The airport facility directory noted that runway 12 had 20-ft-tall trees 25 ft from the runway threshold and required a 4:1 glideslope to remain clear of them. The pilot reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation. 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-Descent/approach/glide path-Not attained/maintained - C
  • C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C
  • C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
  • C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Angle of attack-Not attained/maintained - C

Verbatim from NTSB's published report. Source file NTSB_2018_GAA18CA507.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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Related research

Matched on aircraft type or causal vocabulary (stall). All research papers