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GAA18CA523

2018-09-01 · Porterville, California, United States · Minor · 1 aircraft · Status: Completed

Airport PTV

Current FAA registration · N575DG

Make / Model
EGGLESTON DANIEL S-18 THORP
Engine
LYCOMING O-320-E2D (150 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
20071002
ADS-B equipped
Yes — Mode-S A7614E

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot’s failure to maintain directional control during the takeoff roll.

Factual narrative

The pilot of the tailwheel-equipped airplane reported that, during takeoff, he advanced the throttle to full power, maintained the runway centerline, and began to raise the tail. He added that about 60 mph, the airplane suddenly turned left. He applied full right rudder to no avail. Subsequently, the airplane continued to veer left, exited the runway into plowed dirt, and nosed over. The airplane sustained substantial damage to the fuselage and vertical stabilizer. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The automated weather observation system at the accident airport reported that, about the time of the accident, the wind was variable at 3 knots. The pilot was departing on runway 30. The pilot of the tailwheel-equipped airplane reported that, during takeoff, he advanced the throttle to full power, maintained the runway centerline, and began to raise the tail. He added that, about 60 mph, the airplane suddenly turned left. He applied full right rudder to no avail. Subsequently, the airplane continued to veer left, exited the runway into plowed dirt, and nosed over. The airplane sustained substantial damage to the fuselage and vertical stabilizer. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The automated weather observation system at the airport reported that, about the time of the accident, the wind was variable at 3 knots. The pilot was departing from runway 30. 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-Directional control-Not attained/maintained - C
  • C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
  • — Environmental issues-Physical environment-Terrain-Rough terrain-Contributed to outcome

Verbatim from NTSB's published report. Source file NTSB_2018_GAA18CA523.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.