NTSB CAROL · Event
Event WPR14CA018
Aircraft involved
Probable cause & findings
The collapse of a main landing gear for reasons that could not be determined due to no postaccident examination of the airframe.
Factual narrative
The pilot reported that after successfully completing three practice touch-and-go landings, he extended the landing gear for a fourth landing and noted that the left main gear indicator light was not illuminated. The pilot cycled the landing gear and all three lights then illuminated. A touch-and-go was accomplished and the landing gear was retracted. During the final landing, the landing gear was extended and the left main landing gear light did not illuminate. The pilot cycled the landing gear, however this time the light did not illuminate and he could not confirm that the left main gear was down and locked. The landing approach was continued and shortly after touchdown, the left main landing gear collapsed. The left wing contacted the runway surface and the airplane departed the left side of the runway, coming to rest in a ditch. The left wing and stabilator were substantially damaged. Postaccident examination of the left main landing gear wheel well revealed excessive corrosion, dirt, and wear on the landing gear control arm, strut, torque link, gear spring, and associated connections. During a manual extension of the left main landing gear, the gear locked into the down position and the cockpit gear indicator light illuminated. A review of the airplane's maintenance records revealed that a 100-hour inspection was completed about 2 months before the accident. The pilot reported that after successfully completing three practice touch-and-go landings, he extended the landing gear for a fourth landing and noted that the left main gear indicator light was not illuminated. The pilot cycled the landing gear and all three lights then illuminated. A touch-and-go was accomplished and the landing gear was retracted. During the final landing, the landing gear was extended and the left main landing gear light did not illuminate. The pilot cycled the landing gear, however this time the light did not illuminate and he could not confirm that the left main gear was down and locked. The landing approach was continued and shortly after touchdown, the left main landing gear collapsed. The left wing contacted the runway surface and the airplane departed the left side of the runway, coming to rest in a ditch. The left wing and stabilator were substantially damaged. Postaccident examination of the left main landing gear wheel well revealed excessive corrosion, dirt, and wear on the landing gear control arm, strut, torque link, gear spring, and associated connections. During a manual extension of the left main landing gear, the gear locked into the down position and the cockpit gear indicator light illuminated. A review of the airplane's maintenance records revealed that a 100-hour inspection was completed about 2 months before the accident. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).
- — Environmental issues-Physical environment-Terrain-Sloped/uneven-Contributed to outcome
- — Aircraft-Aircraft systems-Landing gear system-Main landing gear-Fatigue/wear/corrosion
- C Not determined-Not determined-(general)-(general)-Unknown/Not determined - C
Verbatim from NTSB's published report. Source file
NTSB_2013_WPR14CA018.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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