NTSB CAROL · Event
Event LAX98LA056
Aircraft involved
Probable cause & findings
An in-flight loss of control resulting from a malfunction in the wing flap operating system. The malfunction produced asymmetrical drag and induced a roll which could not be overcome by the pilot's flight control inputs.
Factual narrative
On December 9, 1997, at 1106 hours Pacific standard time, a Stephen B. Johnson, Bushrod, N6232F, operated by the pilot, experienced a loss of control approaching the Corona Municipal Airport, Corona, California. The experimental airplane was destroyed, and the airline transport certificated pilot was seriously injured. Two unoccupied parked airplanes were also damaged during the collision. Visual meteorological conditions prevailed at the time, and no flight plan was filed. The flight originated from Corona about 1045. The pilot indicated to the Federal Aviation Administration coordinator that the purpose of the test flight was, in part, to explore the airplane's operating envelope. The first approach and intentional go-around to runway 25 was accomplished without using the flaps, and no anomalies were reported. Full flaps were used during the second approach. The pilot reported that after the flaps were extended the airplane entered a left turn which he could not stop despite his flight control inputs, and the airplane descended. The accident occurred during the 7th hour of the flight test program. The pilot reported no mechanical problems. The pilot took off in the experimental, homebuilt airplane, for a planned series of approaches to explore the airplane's operating envelope. The first approach was performed without use of the wing flaps, and no anomalies were reported. During the next approach, the pilot fully extended the flaps. The airplane entered a left turn which, according to the pilot, could not be stopped. The pilot lost control of the airplane, it descended and collided with two unoccupied airplanes. The accident occurred during the 7th hour of the flight test program. There were no reported mechanical problems. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1997_LAX98LA056.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (loss of control, 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.
- 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…
- 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…
- 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.
- Embry-Riddle Scholarly Commons 2023 · Conference paper
Utilizing Deep Learning to Predict Unstabilized Approaches for General Aviation Aircraft
Unstabilized approaches pose a major hazard for general aviation aircraft. In the period from 2009 to 2019, 3,257 general aviation accidents occurred during the landing phase of flight in which loss o…
- NTSB Aircraft Accident Reports 2022 · Accident report
Loss of Control on Takeoff in Icing Conditions — Citation 560XL
Cessna Citation 560XL fatal takeoff icing accident, March 2018. Investigation of a Citation 560XL loss-of-control takeoff accident in icing conditions.
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