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Atlas / NTSB / GAA19CA586

NTSB CAROL · Event

Event GAA19CA586

2019-09-27 Williams, California, United States None 1 aircraft Status: Completed

Registry · N3985M

FAA Aircraft Registry record.

Make / Model

PIPER PA-12

Engine

LYCOMING 0-235 SERIES (115 hp)

Seats / Engines

3 seats · 1 engine

Last airworthiness date

19560622

ADS-B equipped

Yes — Mode-S A4A394

Registrant of record

FURNAS JERRY W

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot's over application of power during recovery from a runway excursion, which resulted in a ground loop and nose over.

Factual narrative

The pilot of the tailwheel-equipped airplane reported that, after landing on a gravel road, he looked to the right and unintentionally steered the airplane to the right into a small ditch. He applied power to force the airplane out of the ditch back onto the road, however, the right main landing gear "locked up due to the weeds wrapping around it". The airplane ground looped and nosed over. The airplane sustained substantial damage to both wings and empennage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The pilot of the tailwheel-equipped airplane reported that, after landing on a gravel road, he looked to the right and unintentionally steered the airplane to the right into a small ditch.  He applied power to force the airplane out of the ditch back onto the road, however, the right main landing gear "locked up due to the weeds wrapping around it".  The airplane ground looped and nosed over. The airplane sustained substantial damage to both wings and empennage. The pilot 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-Directional control-Incorrect use/operation - C
  • C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
  • C Environmental issues-Physical environment-Terrain-Sloped/uneven terrain-Effect on operation - C

Verbatim from NTSB's published report. Source file NTSB_2019_GAA19CA586.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 ↗