SEA01LA135
2001-07-18 · Oak Harbor, Washington, United States · None · 1 aircraft · Status: Completed
Airport NUW
Aircraft involved
Probable cause & findings
The pilot's inadequate remedial action while on final approach. The encounter with wake turbulence was a factor.
Factual narrative
On July 18, 2001, approximately 1900 Pacific daylight time, a Piper PA-28-180, N4231T, registered to and operated by Whidbey Island Navy Flying Club as a 14 CFR Part 91 instructional flight, landed hard at Whidbey Island Naval Air Station, Oak Harbor, Washington. Visual meteorological conditions prevailed and no flight plan was filed. The aircraft was substantially damaged and the certified flight instructor and private pilot were not injured. The flight was scheduled for a 1.5 hour flight in the local area with a stop at Bremerton, Washington. The manager of the flying club reported that the accident aircraft was sequenced in the pattern with a Navy P-3 (Lockheed 4-engine) aircraft that was doing touch-and-go landings. When the accident aircraft was on short final to runway 25, the aircraft "rolled violently to the right (60-90 degrees)." The pilot attempted to recover from the roll, however, during the maneuver, the right wing struck the runway surface. The aircraft touched down, collapsing the nose gear. The aircraft slid approximately 60 feet before coming to rest on the runway's edge. The accident aircraft was sequenced in the pattern with a Navy P-3 (Lockheed 4-engine) aircraft that was doing touch-and-go landings. While the accident aircraft was on short final, the aircraft rolled violently to the right about 60 to 90 degrees. The pilot attempted to recover from the roll, however, during the maneuver, the right wing struck the runway surface. The aircraft touched down, collapsing the nose gear. The aircraft slid approximately 60 feet before coming to rest on the runway's edge. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2001_SEA01LA135.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
Matched on aircraft type or causal vocabulary (wake turbulence, turbulence). All research papers
- NASA NTRS 2019 · Conference Paper Aircraft wake turbulence minimization by aerodynamic means
The paper reviews NASA's efforts on wake vortex turbulence minimization by aerodynamic design or retrofit modifications to large transport aircraft.
- NASA NTRS 2019 · Conference Paper Wake Turbulence Mitigation for Arrivals (WTMA)
The preliminary Wake Turbulence Mitigation for Arrivals (WTMA) concept of operations is described in this paper. The WTMA concept provides further detail to work initiated by the Wake Vortex Avoidance…
- NASA NTRS 2019 · Conference Paper Aircraft wake turbulence avoidance
Aircraft wake turbulence /trailing vortex systems/ avoidance during flight, describing procedures for pilots and tower operators
- NASA NTRS 2019 · Conference Paper Aircraft wake turbulence progress and plans
Aircraft wake turbulence and trailing vortices, investigating physical characteristics, hazard potential and avoidance techniques
- SKYbrary (Eurocontrol) 2023 · SKYbrary article Wake Vortex Turbulence — SKYbrary Knowledge Base
SKYbrary wake vortex turbulence comprehensive article — generation mechanics, dissipation factors, separation standards (ICAO LIGHT/MEDIUM/HEAVY/SUPER + recategorisation RECAT-EU).
- NASA NTRS 2019 · Contractor Report (CR) An Examination of Aviation Accidents Associated with Turbulence, Wind Shear and Thunderstorm
The focal point of the study reported here was the definition and examination of turbulence, wind shear and thunderstorm in relation to aviation accidents.