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Atlas / NTSB / WPR20LA309

NTSB CAROL · Event

Event WPR20LA309

2020-09-10 Enterprise, Oregon, United States Airport · 8S4 None 1 aircraft Status: Completed

Registry · N933V

FAA Aircraft Registry record.

Make / Model

BIRD CK

Year of manufacture

1931 · 89 years old at event

Engine

CONT MOTOR W670 SERIES (250 hp)

Seats / Engines

3 seats · 1 engine

Last airworthiness date

19940722

ADS-B equipped

Yes — Mode-S ACF2A9

Registrant of record

STANGEL RICHARD C

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot’s failure to maintain directional control during landing, which resulted in a runway excursion and collision with terrain.

Factual narrative

The pilot reported that, before landing, the throttle was increased to maintain altitude to correct his position over the runway, however, the engine sputtered and the airplane lost altitude and the main landing gear touched the runway. Being angled on the runway, the pilot applied full power to go-around and change direction away from hangars. The pilot expected to climb; however, the airplane would not maintain altitude or climb. The engine was running, but it would not develop enough power to get positive response on the flight controls. The pilot subsequently landed in a field to the right side of the runway. The landing gear collapsed, and both the upper and lower wings were substantially damaged. While securing the airplane, the pilot reported that the carburetor heat was in the on position during the landing. 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).

  • Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained
  • Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot
  • Aircraft-Aircraft power plant-Engine controls-(general)-Incorrect use/operation
  • Environmental issues-Physical environment-Terrain-Rough terrain-Contributed to outcome

Verbatim from NTSB's published report. Source file NTSB_2020_WPR20LA309.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, go-around). 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 ↗