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Atlas / NTSB / WPR22LA171

NTSB CAROL · Event

Event WPR22LA171

2022-04-29 Portland, Oregon, United States Airport · NONE None 1 aircraft Status: Completed

Registry · N20640

FAA Aircraft Registry record.

Make / Model

CESSNA 180K

Year of manufacture

1981 · 41 years old at event

Engine

CONT MOTOR O-470 SERIES (230 hp)

Seats / Engines

4 seats · 1 engine

Last airworthiness date

19810925

ADS-B equipped

Yes — Mode-S A1AB4A

Registrant of record

CAHOON NEIL T

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot’s failure to maintain directional control during landing on a wet surface with a tailwind, which resulted in a runway excursion.

Factual narrative

The pilot reported that, he initiated an approach to a private grass airstrip with a 5-knot tailwind. During the landing roll the airplane had limited brake effectiveness as the grass was wet. The airplane subsequently slid off the airstrip and collided with a fence. The right-side elevator was substantially damaged. The pilot 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).

  • Personnel issues-Action/decision-Info processing/decision-Decision making/judgment-Pilot
  • Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot
  • Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained
  • Environmental issues-Conditions/weather/phenomena-Wind-Tailwind-Effect on operation

Verbatim from NTSB's published report. Source file NTSB_2022_WPR22LA171.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 ↗