NTSB CAROL · Event
Event WPR20LA319
Aircraft involved
Probable cause & findings
The pilot’s loss of airplane control due to spatial disorientation after entering instrument meteorological conditions.
Factual narrative
On September 27, 2020, at 0703 Pacific daylight time (PDT), a Cessna T182T airplane, N157RC, was destroyed when it was involved in an accident near Santa Barbara, California. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot departed Santa Barbara Municipal Airport (SBA), Santa Barbara, California, for a cross-country flight to Truckee-Tahoe Airport (TRK), Truckee, California. According to radar data and voice communications provided by the Federal Aviation Administration, about 0701, the pilot contacted SBA tower requesting departure instructions. The local controller issued the pilot the wind information and a takeoff clearance from runway 15L. The pilot acknowledged the instructions. When the airplane was approximately 0.5 nautical miles (nm) off the departure end of runway 15L, over the Pacific Ocean headed southbound, and at an altitude about 700 feet mean sea level (msl), the local controller instructed the pilot to contact departure control. The pilot acknowledged the instructions. About 0702, as the airplane was at an altitude of 1,000 ft msl, the pilot contacted departure control. The departure controller established radar contact and instructed the pilot to turn right heading 255° and climb to 8,000 ft. The pilot acknowledged the instruction, and radar data indicated the airplane was at an altitude of 1,300 ft msl when a turn to the right (west) was initiated, followed by a turn to the north and a rapid descent. About 0703, radar contact was lost, and the departure controller attempted to contact the pilot. No further transmissions were received from the pilot. The Los Angeles County Sheriff’s Department Dive Unit located the pilot and airplane wreckage at a depth of approximately 200 ft on Thursday, October 1, 2020. The wreckage was recovered and examined at a secure facility. The examination revealed the fuselage and wings were separated into multiple segments and highly compressed. Aileron control continuity was established from each flight control surface to the wing root where the cables were separated from tension overload. The cabin section of the aileron control cable system was not recovered. Elevator and rudder control continuity was established from the control surfaces to where the aft fuselage section was separated. The aileron control yokes, rudder pedals, firewall instrument panel and engine were not recovered. The fuel selector was observed in the BOTH position and both wing fuel tanks were breached. According to fuel receipts provided by personnel at SBA, the pilot purchased 40 gallons of 100LL fuel on the morning of the accident. The closest weather reporting station was an automated surface observing system (ASOS) located at Oxnard Airport (OXR), about 33 miles east-southeast of the accident location. At 0651 PDT, the OXR ASOS reported wind from 060° at 4 knots, visibility of 7 statute miles, ceiling overcast at 1,400 ft, temperature 19° Celsius (C), dew point 17°C, and altimeter setting of 29.87 inches of mercury. At the time of the accident, an airman's meteorological information (AIRMET) for instrument flight rules conditions in mist and fog was active for the accident location. Additionally, pilot reports made in the Los Angeles area within a few hours of the accident included references to instrument meteorological conditions between 1,400 and 2,000 ft. According to the National Ocean and Atmospheric Administration, sunrise occurred at the accident location at 0651. At the time of the accident, the sun was about 1.9º above the horizon at an azimuth of 93º. An autopsy of the pilot was performed by the Santa Barbara County Coroner, which listed the cause of death as “multiple traumatic injuries.” At the request of the coroner, Ascertain Forensics performed postmortem toxicological testing of spleen tissue from the pilot. This testing detected ethanol at 0.05 g/dL, and presumptively identified (without confirmation) ßphenylethylamine. Toxicology testing performed at the FAA Forensic Sciences Laboratory detected ethanol at 0.024 g/dL in cavity blood and did not detect ethanol in urine (less than 0.001 g/dL). Ethanol is a type of alcohol. It is the intoxicating alcohol in beer, wine, and liquor, and, if consumed, can impair judgment, psychomotor performance, cognition, and vigilance. However, consumption is not the only possible source of ethanol in postmortem specimens. Ethanol can be produced by microbes in a person’s body after death. ß-phenylethylamine is another substance that can be produced by microbes in a person’s body after death. The FAA’s Airplane Flying Handbook (FAA-H-8083-3B) describes some hazards associated with flying when the ground or horizon are obscured. The handbook states, in part, the following: The vestibular sense (motion sensing by the inner ear) in particular can and will confuse the pilot. Because of inertia, the sensory areas of the inner ear cannot detect slight changes in airplane attitude, nor can they accurately sense attitude changes that occur at a uniform rate over a period of time. On the other hand, false sensations are often generated, leading the pilot to believe the attitude of the airplane has changed when, in fact, it has not. These false sensations result in the pilot experiencing spatial disorientation. The pilot departed about 10 minutes after sunrise for the cross-country flight destined for her home airport. As instructed by air traffic control (ATC), she departed on a westbound heading over the Pacific Ocean. About 1 minute after departure, at an altitude of 1,300 ft mean sea level (msl), the pilot acknowledged ATC instructions to turn right to a heading of 255° and climb to 8,000 ft. The pilot acknowledged the instruction, and radar data indicated the airplane initiated a turn to the right (west), followed by a turn to the north and a rapid descent to the water. Examination of the airframe did not reveal any anomalies that would have precluded normal operation. Although the engine was not recovered, the damage to the airframe was consistent with a high-speed impact. The closest weather reporting station, located about 33 miles east-southeast of the accident location reported visibility of 7 statute miles and an overcast ceiling of 1,400 ft about 12 minutes before the accident. Additionally, an airman's meteorological information (AIRMET) for instrument flight rules conditions in mist and fog was active for the accident location and pilot reports (made in the area within a few hours of the accident) included references to instrument meteorological conditions (IMC) between 1,400 and 2,000 ft. As the airplane began its turn to the west, the low sun angle and mist would have restricted forward visibility and identification of a visual horizon while operating over the ocean, and it is likely that the airplane entered IMC during the turn. The recorded radar data (showing the turn continuing beyond the assigned heading, tightening, and being accompanied by a rapid descent) were consistent with the pilot experiencing the effects of spatial disorientation. Toxicology testing on the pilot revealed ethanol in postmortem cavity blood and spleen tissue; ethanol was not detected in urine, which is a specimen type that is generally less susceptible to postmortem microbial contamination and ethanol production. Although postmortem microbial activity does not always produce ethanol, in this case, the absence of ethanol in urine indicates that the ethanol detected in other specimen types did not likely come from ethanol consumption. Thus, ethanol was not likely a factor in the accident. 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-Psychological-Perception/orientation/illusion-Spatial disorientation-Pilot
- — Environmental issues-Conditions/weather/phenomena-Ceiling/visibility/precip-Clouds-Effect on personnel
- — Aircraft-Aircraft oper/perf/capability-Performance/control parameters-(general)-Not attained/maintained
- — Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot
Verbatim from NTSB's published report. Source file
NTSB_2020_WPR20LA319.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 (spatial disorientation, imc). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Embry-Riddle Scholarly Commons 2025 · Journal article (IJAAA)
Design, Implementation, and Testing of Spatial Disorientation Scenarios in a Modified Hexapod Motion Simulator
Abstract Investigations into aviation accidents aim to identify root causes and enhance safety. Despite advancements in safety measures, technology, and education, general aviation accident rates rema…
- AOPA Air Safety Institute 2022 · Safety advisor
Safety Advisor: Spatial Disorientation
Safety advisor on the perceptual illusions that cause spatial disorientation: the leans, graveyard spiral, somatogravic and somatogyral illusions, false horizon, and Coriolis.
- NASA NTRS 2019 · Conference Paper
Evaluation of Low Cost, User-Centered Alerting Devices for the Mitigation of Flight Crew Spatial Disorientation
The National Aeronautics and Space Administration (NASA) is conducting research into technologies which have the potential to reduce flight crew Spatial Disorientation (SD).
- NASA NTRS 2019 · Presentation
Pre-Flight Training of Autonomic Responses for Mitigating the Effects of Spatial Disorientation During Spaceflight
The National Aeronautics and Space Administration (NASA) has identified a potential risk of spatial disorientation, motion sickness, and degraded performance to astronauts during re-entry and landing …
- NASA NTRS 2019 · Other
The Role of Spatial Disorientation in Fatal General Aviation Accidents
In-flight Spatial Disorientation (SD) in pilots is a serious threat to aviation safety. Indeed, SD may play a much larger role in aviation accidents than the approximate 6-8% reported by the National …
- NASA NTRS 2019 · Technical Memorandum (TM)
Autogenic-Feedback Training Exercise (AFTE) Mitigates the Effects of Spatial Disorientation to Simulated Orion Spacecraft Re-Entry: Individual Differences
NASA has identified a potential risk of spatial disorientation to future astronauts during re-entry of the proposed Orion spacecraft.
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