NTSB CAROL · Event
Event WPR20LA215
Registry · N22393
FAA Aircraft Registry record.
Make / Model
CESSNA 150H
Year of manufacture
1968 · 52 years old at event
Engine
CONT MOTOR 0-200 SERIES (100 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
19680124
ADS-B equipped
Yes — Mode-S A1EFD5
Registrant of record
THRASHER THOMAS B
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's delayed decision to go around from an unstable approach, which resulted in insufficient airplane performance to climb above rising terrain and a subsequent aerodynamic stall.
Factual narrative
On July 8, 2020, at 1554 Pacific daylight time, a Cessna 150H airplane, N22393, was substantially damaged when it was involved in an accident near the Vaughan Ranch Airfield (WN13), Port Orchard, Washington. The pilot was seriously injured. The airplane was operated as a Title 14 Code of Federal Regulations (CFR) Part 91 personal flight. Automatic dependent surveillance-broadcast (ADS-B) data showed the airplane departed Bremerton National Airport (PWT), Washington, and flew east before entering the traffic pattern at WN13. Three witnesses observed portions of the airplane’s flight near the airport. The airplane’s final approach was described as unstable, high, and fast. The airplane continued to descend and when it was about ¼ of the way down the runway it disappeared from view behind a berm. None of the witnesses were able to observe if the pilot attempted a go-around or conducted a touch-and-go landing. A few seconds later, the airplane came back into view and was about 30 ft above ground level. The engine sounded as if it was at "full power" and the flaps were still extended. The airplane appeared to be flying slowly and struggling to climb, as if it was "hanging onto a stall." The airplane began a right bank toward rising terrain and trees. The airplane's bank angle increased when the airplane impacted the trees in a "knife edge" attitude and dropped to the ground. One of the witnesses, a retired airline pilot, further reported that the airport has “very tight margins” and is a one-way airport. The north end of the runway is 50 ft higher than the south end; therefore, landings are limited to the north (uphill), and takeoffs to the south. He further stated that go-arounds are very difficult in all but high-performance aircraft. In "additional remarks" section of the airport facilities directory for WN13 states: "Land North takeoff south" and "Landing north uphill" The pilot does not recall the accident flight. The airplane's mechanic reported that the pilot had flown this airplane into WN13 about four times a year for the past 15 years and was familiar with the airport. The airplane came to rest nose down and slightly left-wing low in a residential backyard. The cabin remained mostly intact and was extending upward from the engine compartment. Both wings remained attached to the airframe and exhibited crush damage. The leading edge of the left wing came to rest in the dirt and exhibited aft crush damage throughout its span. The fuselage just aft of the cabin was crushed toward the left; the aft fuselage and empennage were bent about 90° to the left. The empennage exhibited some damage but was overall intact. A postaccident airframe and engine examination by a Federal Aviation Administration inspector revealed no anomalies that would have precluded normal operations. The airplane pilot was observed conducting a visual approach to land to the north. The final approach was described as unstable, high, and fast. The airplane continued to descend and when it was about ¼ of the way down the runway it disappeared from view behind a berm. A few seconds later, the airplane came back into view and was about 30 ft above ground level. The engine sounded as if it was at full power and the flaps were still extended. The airplane appeared to be flying slowly and struggling to climb, as if it was "hanging onto a stall." The airplane began a right bank toward rising terrain and trees. The airplane's bank angle increased, and the airplane impacted the trees in a "knife edge" attitude and dropped to the ground. A postaccident airframe and engine examination revealed no anomalies with the airframe or engine that would have precluded normal operations. A witness who is also a retired airline pilot reported that the airport has very tight margins and is a one-way airport. The north end of the runway is 50 feet higher than the south end; therefore, landings are limited to the north (uphill), and takeoffs to the south. Go-arounds are very difficult in all but high-performance aircraft. The airplane's mechanic reported that the pilot had flown this airplane into the airport about four times a year for the past 15 years and was familiar with the airport. It is likely that the pilot made a delayed decision to go-around following an unstable approach and the airplane subsequently lacked the performance necessary to climb and clear rising terrain. The airplane then aerodynamically stalled and spun as the pilot maneuvered the airplane. 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 Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot
- F Environmental issues-Physical environment-Terrain-Sloped/uneven terrain-Effect on equipment
- F Personnel issues-Action/decision-Info processing/decision-Decision making/judgment-Pilot
- — Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Angle of attack-Not attained/maintained
Verbatim from NTSB's published report. Source file
NTSB_2020_WPR20LA215.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (stall, 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.
- NASA NTRS 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- NASA NTRS 2025 · Conference Paper
A Training Study to Improve Monitoring During A Go-Around
As part of an FAA program to improve go-around (GA) safety, we were asked to determine if we could improve the performance of the Pilot Monitoring (PM) during a GA maneuver.
- Flight Safety Foundation 2024 · FSF / AeroSafety World
Go-Around Safety Forum Findings
Foundation Go-Around Safety Forum technical findings — examines why pilots fail to execute go-arounds when criteria are met (stabilized approach gate not met, energy state out of envelope, traffic con…
- arXiv 2023 · arXiv preprint
Automating Bird Diverter Installation through Multi-Aerial Robots and Signal Temporal Logic Specifications
This paper tackles the task assignment and trajectory generation problem for bird diverter installation using a fleet of multi-rotors.
- arXiv 2023 · arXiv preprint
Variation of Critical Crystallization Pressure for the Formation of Square Ice in Graphene Nanocapillaries
Two-dimensional square ice in graphene nanocapillaries at room temperature is a fascinating phenomenon and has been confirmed experimentally.
- arXiv 2023 · arXiv preprint
Polycrystallinity enhances stress build-up around ice
Damage caused by freezing wet, porous materials is a widespread problem, but is hard to predict or control. Here, we show that polycrystallinity makes a great difference to the stress build-up process…
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