LAX04CA091
2004-01-10 · Fresno, California, United States · None · 1 aircraft · Status: Completed
Airport FCH
Current FAA registration · N606M
- Make / Model
- FLEET 2
- Year of manufacture
- 1929 · 75 years old at event
- Engine
- KINNER B5 SERIES (125 hp)
- Seats / Engines
- 2 seats · 1 engine
- Last airworthiness date
- 19560605
- ADS-B equipped
- Yes — Mode-S A7DE9C
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
the pilot's failure to set the throttle friction lock, which resulted in the inadvertent application of the throttle, followed by a loss of directional control.
Factual narrative
On January 10, 2004, about 1155 Pacific standard time, a Fleet 2 bi-wing airplane, N606M, veered off of the runway, and came to rest inverted at the Fresno-Chandler Airport, Fresno, California. The pilot was operating the airplane under the provisions of 14 CFR Part 91. The private pilot, the sole occupant, sustained minor injuries; the airplane sustained substantial damage. The personal local flight departed the Fresno-Chandler Airport, about 1145, to perform touch-and-go takeoffs and landings. Visual meteorological conditions prevailed, and no flight plan had been filed. The pilot reported in the Pilot/Opertor Aircraft Accident Report (NTSB Form 6120.1/2), that a few days prior to the accident he performed maintenance on the throttle. After loosening the throttle friction locks, he forgot to tighten them. During the landing roll, he removed his hand from the throttle control, and it went into the "wide open" position. The airplane veered to the right, and then to the left, before coming to rest inverted. The pilot stated that there were no mechanical failures or malfunctions during the flight. The Federal Aviation Administration inspector interviewed a witness to the accident. The witness stated that while he was taxing out of his hangar, he observed the airplane yawing from side to side, trying to establish a landing attitude on runway 30L. The left wing hit the ground and the airplane veered left, departing the runway. The airplane struck soft dirt, and nosed over. During the landing roll, the pilot lost directional control of the airplane, which then veered off the runway, encountered soft soil, and nosed over. The pilot said he performed maintenance on the throttle a few days prior to the accident. He loosened the throttle friction locks and forgot to tighten them. During landing, he took his hand off the throttle control and it went into the "wide open" position. The airplane swerved to the right, and then to the left and veered off the runway into soft dirt, and nosed over. The pilot stated that there were no mechanical failures or malfunctions during the flight. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2004_LAX04CA091.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 (maintenance). All research papers
- Embry-Riddle Scholarly Commons 2026 · Journal article (IJAAA) From Reactive to Predictive: A hybrid Trust-Mediated Adoption Framework for Data-Driven Maintenance in Distributed-Authority Aviation Environments
Modern aviation maintenance operates within increasingly data-intensive technological environments, yet the operational integration of predictive maintenance into routine decision-making remains incon…
- Semantic Scholar 2026 · Article (Reliability Engineering & System Safety) Understanding human error in military aviation maintenance: The role of Performance shaping factors, cognitive workload and error orientation
- Semantic Scholar 2025 · Article (Applied Sciences) Decision-Making Framework for Aviation Safety in Predictive Maintenance Strategies
The implementation of predictive maintenance (PM) in aviation presents unique challenges due to strict safety requirements, complex operational environments, and regulatory constraints.
- Semantic Scholar 2024 · Article (Defence Science Journal) Modelling of Human Factors in Aviation Maintenance Using HFACS ME Human Factors Analysis and Classification System Maintenance Extension and Bayesian Network
Aircraft maintenance is a complex task involving a skilled human workforce, spare parts, and various other resources. Human factors are an inherent element of the human workforce.
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER) A New Trajectory in UAV Safety: Leveraging Reinforcement Learning for Distance Maintenance Under Wind Variations
In the field of aviation, safety is a critical cornerstone, and the operation of Unmanned Aerial Vehicle (UAV) systems is deeply connected with this principle.
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER) Low-Resource Automatic Speech Recognition Domain Adaptation – A Case-Study in Aviation Maintenance
With timeliness and efficiency being critical in the aviation maintenance industry, the need has been growing for smart technological solutions that optimize and streamline the different underlying ta…