NTSB CAROL · Event
Event LAX07CA091
Registry · N39KB
FAA Aircraft Registry record.
Make / Model
RANS S-19
Year of manufacture
2012
Engine
ROTAX 912ULS SERIES (100 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
20121017
ADS-B equipped
Yes — Mode-S A48153
Registrant of record
WALKER CHRIST A
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's inadequate preflight inspection, and his failure to maintain sufficient airspeed to avoid a stall/mush during an aborted takeoff, which resulted in a loss of control, and an in-flight collision with terrain. Factors associated with the accident are snow, wing contamination (snow), and an inadvertent stall.
Factual narrative
The pilot decided to abort the takeoff in the initial climb, and the airplane landed hard, collapsing the right main landing gear. Immediately after takeoff the airplane did not feel right to the pilot, and he pulled the throttle off to abort the takeoff. During the landing attempt the airplane stalled and landed hard, collapsing the right landing gear. Examination of the airplane by airport management personnel immediately after the accident revealed that the wing had approximately 1/2-inch of wet snow covering 2/3 of the upper surface of the wing, including the vortex generators. The pilot stated that during his preflight he had only cleared some of the snow from around the vortex generators. The pilot decided to abort the takeoff in the initial climb, and the airplane landed hard, collapsing the right main landing gear. Immediately after takeoff the airplane did not feel right to the pilot, and he pulled the throttle off to abort the takeoff. During the landing attempt the airplane stalled and landed hard, collapsing the right landing gear. Examination of the airplane by airport management personnel immediately after the accident revealed that the wing had approximately 1/2-inch of wet snow covering 2/3 of the upper surface of the wing, including the vortex generators. The pilot stated that during his preflight he had only cleared some of the snow from around the vortex generators. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2007_LAX07CA091.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 (stall, loss of control). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Semantic Scholar 2016 · Article (Interacción)
Trajectory Recovery System: Angle of Attack Guidance for Inflight Loss of Control
This paper describes the design and development of an ecological display to aid pilots in the recovery of an In-Flight Loss of Control event due to a Stall (ILOC-S).
- NTSB Aircraft Accident Reports 2010 · Accident report
Loss of Control on Approach — Colgan Air Flight 3407
Colgan Air 3407 / Continental Connection (Q400) Buffalo NY, February 12, 2009 — 50 fatalities. Definitive investigation of the Colgan 3407 stall-stick-pusher crash on approach to Buffalo.
- NASA NTRS 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Scoping Review of Aviation Loss of Control Inflight Research
Loss of control – inflight (LOC-I) contributes to aircraft accidents at unacceptably high rates. Significant industry efforts and research have aimed to improve LOC-I prevention, detection, and recove…
- arXiv 2025 · arXiv preprint
Quadratic Programming Approach to Flight Envelope Protection Using Control Barrier Functions
Ensuring the safe operation of aerospace systems within their prescribed flight envelope is a fundamental requirement for modern flight control systems.
- SKYbrary (Eurocontrol) 2024 · SKYbrary article
Loss of Control In-Flight (LOC-I) — SKYbrary Knowledge Base
SKYbrary comprehensive knowledge-base entry on Loss of Control In-Flight — definitions, contributing factors, accident case studies (Air France 447, Colgan 3407), and prevention strategies.
Browse the full corpus — academia portal ↗