NTSB CAROL · Event
Event SEA01LA129
Registry · N7994P
FAA Aircraft Registry record.
Make / Model
PIPER PA-24-250
Engine
LYCOMING 0-540 SERIES (250 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19970211
ADS-B equipped
Yes — Mode-S AADC66
Registrant of record
LETOURNEAU UNIVERSITY
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's failure to maintain adequate directional control. Contributing factors were the embankment and the deer.
Factual narrative
On July 7, 2001, approximately 1030 Pacific daylight time, a Piper PA-24-250, N7994P, registered to and being flown by a private pilot was substantially damaged during an on-ground collision with trees and a deer during landing roll at Vaughan Ranch Airfield, near Fragaria, Washington. The pilot was uninjured. Visual meteorological conditions existed and no flight plan had been filed. The flight, which was personal, was operated under 14CFR91, and originated from Boeing Field, Seattle, Washington, about 1020 on the morning of the accident. The pilot reported that upon arrival at the Vaughn private airstrip he entered the traffic pattern for landing. He further reported that, "...Upon aligning with the runway [02], I lowered full flaps and verified that the runway was clear...." The pilot slowed his approach speed to 85 miles per hour, adjusted his glide slope to clear the trees at the approach end of the 2,200 foot long grass runway, and touched down about 200-300 feet beyond the displaced threshold. He continued reporting "I...saw a deer standing slightly right of centerline at approximately 1/3 to1/2 way along the length of the runway...." The pilot chose not to attempt a go-around maneuver on the unidirectional runway because of the upsloping runway and tall trees at the north end. The pilot further reported, "...I applied full brakes and watched the deer turn to look my direction then look away but it remained standing in the same spot. The deer was too close to allow the aircraft to stop in time and was facing slightly to the right so I maneuvered to the left side of the runway trying to avoid collision with the deer. The airplane continued to the left until the left wing and landing gear contacted an embankment on the left side of the runway...." The aircraft was traveling about 30-40 miles per hour when it ground looped and came to rest along the left edge of the runway. The pilot reported that the runway width was 50 feet with an approximate 25 feet additional surface outboard of each side of the runway. He also reported that there were tall trees on either side of the runway and at the runway's north end. The pilot landed the Piper PA-24-250, 200-300 feet beyond the displaced threshold of the 2,200 foot long dry, upsloping, grass runway. After touchdown he observed a deer standing slightly right of the runway centerline and chose not to attempt a go-around maneuver on the unidirectional runway because of the upsloping runway condition and tall trees at the north end. The pilot believed that the deer was too close to allow the aircraft to stop in time and thus maneuvered to the left side of the runway trying to avoid a collision. He applied full brakes and during the landing roll, the aircraft departed the left side of the runway encountering an embankment and ground looping to a stop. The pilot reported that the runway width was 50 feet with an approximate 25 feet of additional surface outboard of each side of the runway. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2001_SEA01LA129.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 (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 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…
- Semantic Scholar 2022 · Article (Journal of Safety Research)
Go-around accidents and general aviation safety.
INTRODUCTION Changes in General Aviation (GA) accident rates, specifically in the go-around phase, are examined by comparing the number of accidents, the proportion of fatal accidents, and the proport…
- Semantic Scholar 2021 · Article (Aerospace)
Classification and Analysis of Go-Arounds in Commercial Aviation Using ADS-B Data
Go-arounds are a necessary aspect of commercial aviation and are conducted after a landing attempt has been aborted. It is necessary to conduct go-arounds in the safest possible manner, as go-arounds …
- NASA NTRS 2021 · Accepted Manuscript (Version with final changes)
Go-Around Criteria Refinement for Transport Category Aircraft
Presently, airline pilots are trained to go around if, when lower than 500 ft above the ground, they are outside of a handful of parameters such as airspeed, position, and rate of descent.
- NASA NTRS 2019 · Conference Paper
Validation of Proposed Go-Around Criteria Under Various Environmental Conditions
This paper evaluates the effects of environmental conditions on touchdown performance under varying approach states and validates proposed go-around criteria developed using data from a previously con…
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