NTSB CAROL · Event
Event LAX04LA020
Registry · N3979V
FAA Aircraft Registry record.
Make / Model
CESSNA 170
Year of manufacture
1948 · 55 years old at event
Engine
CONT MOTOR C145 SERIES (145 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19560601
ADS-B equipped
Yes — Mode-S A4A071
Registrant of record
WRIGHT STEVEN A
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
the pilot's inadequate preflight inspection which failed to determine the security of his seat, and his failure to maintain directional control.
Factual narrative
On October 19, 2003, at 1700 Pacific daylight time, a Cessna 170, N3979V, veered off the runway while landing at Montgomery Field, San Diego, California. Plus One Flyers was operating the rental airplane under the provisions of 14 CFR Part 91. The commercial pilot was not injured, and the airplane was substantially damaged. Visual meteorological conditions prevailed, and a flight plan had not been filed. The personal flight originated at MCAS Miramar, San Diego, about 1645. The pilot told the National Transportation Safety Board investigator that as he flared for landing, the tail wheel touched the runway, and then he heard a "click." At that time the seat slid backwards about 1 foot, restricting his ability to reach the controls. The pilot tried to adjust his seated position to regain access to the airplane's controls, but the airplane entered a ground loop to the left and came to rest left of the runway. A Federal Aviation Administration inspector examined and photographed the pilot's seat. He reported that the seat track locking pin was positioned outside the seat track. Examination of the photographs of the pilot's seat and rail showed that the side floor deck was buckled, the seat was structurally deformed, and the seat locking pin was positioned outside the seat rail and roller. The airplane ground looped off the runway when the pilot's seat slid aft during landing. The pilot said that when he flared for landing he heard a "click" and then his seat slid backwards about 1 foot, restricting his ability to reach the controls. The pilot tried to adjust his seat position to regain access to the airplane's controls, but the airplane entered a left ground loop and came to rest left of the runway. A Federal Aviation Administration inspector examined and photographed the pilot's seat. He reported that the seat track locking pin was positioned outside the seat track. He observed that the side floor deck was buckled, the seat was structurally deformed, and the seat locking pin was outside the seat rail and roller, all indicative of impact related damage. The inspector stated that he could not make a reliable determination of pin position prior to the impact damage. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2003_LAX04LA020.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. Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
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The sessile drop technique has been used to measure the wetting angle and the surface tension of molten germanium (Ge) on various substrate materials.
- NASA NTRS 2019 · Abstract
Determination of the Wetting Angle of Germanium and Germanium-Silicon Melts on Different Substrate Materials
During Bridgman growth of semiconductors detachment of the crystal and the melt meniscus has occasionally been observed, mainly under microgravity (microg) conditions.
- NASA NTRS 2019 · Abstract
Contact Angles and Surface Tension of Germanium-Silicon Melts
Precise knowledge of material parameters is more and more important for improving crystal growth processes. Two important parameters are the contact (wetting) angle and the surface tension, determinin…
- arXiv 2019 · arXiv preprint
Heat and water vapor transfer in the wake of a falling ice sphere and its implication for secondary ice formation in clouds
We perform direct numerical simulations of the settling of an ice sphere in an ambient fluid accounting for heat and mass transfer with the aim of studying in a meteorological context the case of fall…
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