NTSB CAROL · Event
Event ERA22LA414
Registry · N8925Y
FAA Aircraft Registry record.
Make / Model
PIPER PA-39
Engine
LYCOMING IO-320 SERIES (150 hp)
Seats / Engines
6 seats · 2 engines
Last airworthiness date
19700701
ADS-B equipped
Yes — Mode-S AC4FE0
Registrant of record
BLUE SKY ADVENTURES LLC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot’s acute cerebrovascular event, which caused symptoms that diminished his situational awareness and prompted him to abort the takeoff, resulting in a runway excursion.
Factual narrative
On September 9, 2022, at 1132 eastern daylight time, N8925Y, a twin-engine Piper PA39 airplane was substantially damaged when it was involved in an accident at the Essex County Airport (CDW), Caldwell, New Jersey. The pilot and the passenger were not injured. The airplane was being operated as a Title 14 Code of Federal Regulations Part 91 personal flight. According to the passenger, she and the pilot were flying to Maine to visit friends. They arrived at CDW around 1000. Once she and the pilot boarded the airplane, the pilot said he forgot where they were going and had to ask the name of the airport. After informing the pilot of their destination, the pilot taxied to the runway and began to accelerate for takeoff. The pilot aborted the takeoff because he thought the passenger’s door was open. The door was secured, and the pilot taxied back to the runway. Just before taking off again, the pilot asked for the second time where they were going. The passenger said she again had to tell the pilot their destination. The pilot initiated the takeoff roll but aborted because he felt something was wrong with the airplane. The passenger said the pilot shut off both engines and “locked up” the brakes, but the airplane went off the runway into the grass. The airplane swerved right and came to rest upright. The left main landing gear collapsed, and the left wing was substantially damaged. The pilot stated that he did not recall any details of the accident. He could only remember pulling the airplane out of the hangar before the flight, then later being in the hospital. The 84-year-old male pilot’s most recent aviation medical examination before the accident was on October 4, 2021. At that time, he reported a medical history including chronic lymphocytic leukemia (CLL) in remission. His reported medications did not include any medications that are generally considered impairing. The Aviation Medical Examiner issued the pilot a third-class medical certificate, in accordance with an FAA Authorization for Special Issuance for CLL. The medical certificate was limited by a requirement to wear corrective lenses and carried a time limitation, which had not expired as of the crash date. In July 2022, the pilot submitted additional reports to the FAA indicating that his CLL remained in remission. Following the accident, when first responders arrived at the accident scene, they noted that the pilot seemed confused and had memory problems. The pilot was hospitalized for neurological evaluation and consultation. Magnetic resonance imaging of the pilot’s brain performed the day after the accident demonstrated an acute-to-subacute lacunar stroke in the right medial temporal lobe. The pilot was discharged from the hospital the day after the accident with a diagnosis of transient global amnesia. The 84-year-old pilot said that he did not recall any details of the accident. He could only remember pulling the airplane out of the hangar before the flight, then later being in the hospital. The 84-year-old pilot and the passenger made two attempts to take off on a cross-country flight. According to the passenger, once she and the pilot boarded the airplane, the pilot said he forgot where they were going and had to ask the name of the airport. After informing the pilot of their destination, the pilot taxied to the runway and began to accelerate for takeoff. The pilot aborted the takeoff because he thought the passenger’s door was open. The door was secured, and the pilot taxied back to the runway. Just before taking off again, the pilot asked a second time where they were going. The passenger again had to tell the pilot their destination. The pilot initiated the takeoff roll, but aborted because he felt something was wrong with the airplane. The airplane went off the end of the runway, resulting in substantial damage to the left wing. When first responders arrived on scene, they noted the pilot was confused and had memory problems. The pilot was hospitalized for neurological evaluation and consultation. Magnetic resonance imaging of the pilot’s brain performed the day after the accident demonstrated an acute-to-subacute lacunar stroke in the right medial temporal lobe. The pilot was discharged from the hospital with a diagnosis of transient global amnesia. As such, the pilot most likely experienced an acute cerebrovascular event. Impairing symptoms of this event likely diminished his situational awareness and prompted him to intentionally abort the takeoff, resulting in the runway excursion. 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-Physical-Impairment/incapacitation-Neurological-Pilot
Verbatim from NTSB's published report. Source file
NTSB_2022_ERA22LA414.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 (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.
- SKYbrary (Eurocontrol) 2024 · SKYbrary article
Runway Excursion — SKYbrary Knowledge Base
SKYbrary runway excursion review — RE-OE (overruns) + RE-LO (lateral). Risk drivers: long landing, high approach speed, contaminated surface, tailwind, mis-set autobrakes.
- NTSB Aircraft Accident Reports 2019 · Accident report
Embraer ERJ 175 Runway Excursion at Charlotte Douglas
Republic Airline ERJ-175 runway excursion CLT, January 2018. Examines a low-energy runway excursion involving misuse of autobrakes + thrust reverser response after a high-crosswind landing on a contam…
- NASA NTRS 2025 · Presentation
Uncovering Resilient Behavior in the Aviation Safety Reporting System Using Large Language Models
Resiliency is present in everyday life, both in system design and exhibited by the operators that function within these systems.
- NASA NTRS 2025 · Conference Paper
Uncovering Resilient Behavior in the Aviation Safety Reporting System Using Large Language Models
Resiliency is present in everyday life, both in system design and exhibited by the operators that function within these systems.
- Flight Safety Foundation 2024 · FSF / AeroSafety World
Runway Safety Initiative Final Report (RSI)
Foundation Runway Safety Initiative final report — comprehensive analysis of runway excursion + incursion risk drivers worldwide.
- Semantic Scholar 2020 · Article
Towards online prediction of safety-critical landing metrics in aviation using supervised machine learning
Abstract In recent years, due to the increased availability of data and improvements in computing power, application of machine learning techniques to various aviation safety problems for identifying,…
Browse the full corpus — academia portal ↗