NTSB CAROL · Event
Event LAX95IA011
Aircraft involved
Probable cause & findings
the fracture and failure of the left main landing gear bellcrank which jammed the landing gear in the retracted position.
Factual narrative
On October 17, 1994, at 1742 hours mountain standard time, a Cessna 402, N402SW, landed gear up and veered off runway 3 at the Grand Canyon Airport, Grand Canyon, Arizona. The airplane was being operated as a sightseeing flight under 14 CFR Part 135 when the incident occurred. The airplane sustained minor damage. The certificated commercial pilot and eight passengers were not injured. One passenger received minor injuries. The flight originated in Las Vegas, Nevada, at 1500 hours. Visual meteorological conditions prevailed and a company visual flight rules flight plan was filed. According to Federal Aviation Administration (FAA) inspectors, a bellcrank in the left main landing gear system fractured, jamming the landing gear in the up position. After getting a gear not safe indication, the pilot orbited the airport about 90 minutes to burn fuel before landing. During the landing roll, the airplane veered left and came to rest about 50 feet east of runway 3 at midfield. The last maintenance inspection of the landing gear system was a 200-hour inspection accomplished on September 20, 1994, about 71.1 flight hours before the accident. At the time of the inspection, there were no discrepancies noted with the bellcrank. An examination of the landing gear by the pilot during his preflight walk-around check of the airplane is a checklist item contained in the aircraft manual. Review of Service Difficulty Reports (SDRs) for Cessna 402A airplanes revealed two previous left main landing gear malfunctions as a result of broken bellcranks. The submitters of the two SDRs both recommended increasing the inspection criteria of the bellcrank. As a result of this incident, Federal Aviation Administration inspectors revised the operator's maintenance program by requiring the landing gear system be inspected every 50 hours of aircraft operation. THE AIRCRAFT LANDED GEAR UP AND VEERED OFF THE RUNWAY. A BELLCRANK IN THE LEFT MAIN LANDING GEAR SYSTEM WAS FOUND FRACTURED, JAMMING THE LANDING GEAR IN THE UP POSITION AFTER TAKEOFF. THE LAST MAINTENANCE INSPECTION OF THE LANDING GEAR SYSTEM WAS A 200-HOUR INSPECTION ACCOMPLISHED ABOUT 71.1 FLIGHT HOURS BEFORE THE INCIDENT. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1994_LAX95IA011.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 (maintenance). 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 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 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.
- 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…
- 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 (IJAAA)
Just Culture in Aviation: A Metaphorical Study on Aircraft Maintenance Students
Just Culture, a sub-dimension of safety culture, has been a prominent and debated topic in aviation safety in recent years.
- Embry-Riddle Scholarly Commons 2024 · Journal article (IJAAA)
Performance PRISM: A Comprehensive Framework For Performance Measurement In Aircraft Maintenance
Aircraft maintenance is governed by rigorous safety requirements and high operational complexity, demanding robust performance measurement frameworks to ensure optimal maintenance practices.
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