NTSB CAROL · Event
Event ATL99LA115
Aircraft involved
Probable cause & findings
The total failure of the nose gear extension and retraction assembly that resulted in the collapse of the nose gear during landing.
Factual narrative
On July 20, 1999, at 1128 central daylight time, a Beech 55, N56AW, nose wheel assembly collapsed during a landing on runway 20C at the Nashville International Airport in Nashville, Tennessee. The instructional flight was operated by the pilot under the provisions of Title 14 CFR part 91 with no flight plan filed. Visual weather conditions prevailed at the time of the accident. The airplane sustained substantial airframe damage. The certified flight instructor and the commercial pilot were not injured. The initial departure time from Nashville, Tennessee, at 0900. According to the pilot, the multi-engine training flight was cleared for a landing on runway 20C. The pilot reported that the before landing checklist was completed, and the landing gear extension was verified by both pilots. The landing on the main wheels, was described as normal, but when the nose wheel was lowered on the runway, both pilots heard a "pop" followed by the collapse of the nose wheel assembly. The airplane slid 2500 feet before stopping on the runway. The post-accident examination of the airplane disclosed that the nose landing gear aft drag brace had broken. The drag brace broke at the point where the retraction rod attaches to the nose gear retract idler tangs. Maintenance history of the failed component was not available, however according to the 100 hour inspection card, a visual and security check is required for nose gear linkage components (see attached copy, illustrated parts catalog, and copy, shop manual,100-hour inspection). According to the pilot, the multi-engine training flight was cleared for a landing on runway 20C. The pilot reported that the before landing checklist was completed, and the landing gear extension was verified by both pilots. The landing on the main wheels, was described as normal, but when the nose wheel was lowered on the runway, both pilots heard a 'pop' followed by the collapse of the nose wheel assembly. The airplane slid 2500 feet before stopping on the runway. The post-accident examination of the airplane disclosed that the nose landing gear aft drag brace had broken. Maintenance history of the failed component was not available. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1999_ATL99LA115.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.
- NASA NTRS 2013 · Conference Paper
Cockpit Resource Management (CRM) training in the 1550th combat crew training wing
The training program the 1550th Combat Crew Training Wing at Kirtland Air Force Base, New Mexico, implemented in September 1985 is discussed.
- 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)
Assessing Past Airworthiness Directives And How Safety Management Systems May Benefit Aviation Product Design And Manufacturing
The European Union Aviation Safety Agency (EASA) continues to promulgate Safety Management Systems (SMS) across aviation organizations when it recently issued SMS requirements for EASA certificated Pa…
- 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.
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