NTSB CAROL · Event
Event CEN21LA460
Aircraft involved
Probable cause & findings
A faulty landing gear pressure switch prematurely deactivated the landing gear motor during extension, which resulted in the landing gear collapsing during rollout.
Factual narrative
During the landing rollout, the right main landing gear collapsed and the airplane veered to the right, which resulted in substantial damage to the horizontal stabilizer. Postaccident examination revealed that the landing gear electric motor would deactivate prematurely due to a faulty pressure switch that prevented full extension of the landing gear. No other landing gear anomalies were observed, including during manual operation of the landing gear hand pump. A landing gear maintenance discrepancy was recorded as “landing gear slow to operate, sometimes need to use handpump” during the last annual inspection. Maintenance personnel troubleshot the landing gear discrepancy and identified a pressure switch to be out of tolerance at 1,100 psi and shimmed the switch to 1,500 psi. During the approach to landing, the pilot recalled that the green landing gear down light was on and he did not hear the landing gear warning horn; however, both the landing gear down light and warning horn tested normally during the examination. 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).
- — Personnel issues-Task performance-Use of equip/info-Use of checklist-Pilot
- — Aircraft-Aircraft systems-Landing gear system-Gear extension and retract sys-Inoperative
Verbatim from NTSB's published report. Source file
NTSB_2021_CEN21LA460.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.
Browse the full corpus — academia portal ↗