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Atlas / NTSB / GAA18CA553

NTSB CAROL · Event

Event GAA18CA553

2018-09-13 Spanish Fork, Utah, United States Airport · SPK Minor 1 aircraft Status: Completed

Aircraft involved

Probable cause & findings

The student pilot’s failure to maintain the runway heading during takeoff and the flight instructor’s decision to conduct primary flight instruction in an airplane without dual controls.

Factual narrative

The flight instructor reported that, during takeoff, as the airplane reached rotation speed, the student took his feet off the rudder pedals. The airplane drifted left of the runway centerline, the student quickly placed his feet back on the pedals and pushed the right brake, which caused the airplane to veer right. The instructor, who did not have brakes on his side, applied left rudder, but the airplane departed the right side of the runway. During the runway excursion, the tail was heard dragging the ground or striking bushes. Subsequently, the airplane aligned with the runway, but fearing damage to the tail, the instructor aborted the takeoff and landed the airplane on the side of the runway, striking large mounds of dirt and a ditch. The airplane sustained substantial damage to both wings and the fuselage. The flight instructor reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The flight instructor reported that, during takeoff, as the airplane reached rotation speed, the student took his feet off the rudder pedals. The airplane drifted left of the runway centerline, and the student then quickly placed his feet back on the pedals and pushed the right brake, which caused the airplane to veer right. The instructor, who did not have brakes on his side, applied left rudder, but the airplane departed the right side of the runway. He added that, during the runway excursion, he heard the tail dragging along the ground or striking bushes. Subsequently, the airplane aligned with the runway, but fearing damage to the tail, the instructor aborted the takeoff and landed the airplane on the side of the runway, and it struck large mounds of dirt and a ditch. The airplane sustained substantial damage to both wings and the fuselage. The flight instructor reported that there were no preaccident mechanical failures or malfunctions 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-Heading/course-Not attained/maintained - C
  • C Personnel issues-Task performance-Use of equip/info-Aircraft control-Student/instructed pilot - C
  • C Personnel issues-Action/decision-Info processing/decision-Decision making/judgment-Instructor/check pilot - C
  • Environmental issues-Physical environment-Terrain-Sloped/uneven terrain-Contributed to outcome

Verbatim from NTSB's published report. Source file NTSB_2018_GAA18CA553.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 ↗