NTSB CAROL · Event
Event CHI96LA046
Registry · N50235
FAA Aircraft Registry record.
Make / Model
BROOKS RONALD D COZY
Engine
FRANKLIN 4A235 SERIES (135 hp)
Seats / Engines
3 seats · 1 engine
Last airworthiness date
20021203
ADS-B equipped
Yes — Mode-S A6443D
Registrant of record
HAMIDI SAEID
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
the pilot's improper maintenance of the helicopter. Factors in the accident were the pilot's lack of proper certification for the operation of the helicopter and his lack of recent experience in type of aircraft.
Factual narrative
On December 2, 1995, at 1505 central standard time, an Eckley Rotorway helicopter, N50235, piloted by the owner/builder, sustained substantial damage when it rolled over after start up at Salina Municipal Airport, Salina, Kansas. The non- certificated pilot reported no injuries. Visual meteorological conditions prevailed for the 14 CFR Part 91 local flight, no flight plan was filed. During a telephone interview, the pilot reported that the helicopter had been in storage for the past three years. This was to be the helicopter's first flight since taken out of storage. The pilot stated the purpose of the flight was to check the cyclic rigging. He stated that he has performed all inspections and rigging on the helicopter. The pilot stated that the cause of the accident was the over adjusting of the cycle control during the rigging procedure which caused the rollover. Review of the pilot's logbook revealed the pilot did not hold a valid medical, airman certificate, nor the student pilot endorsements required to operate the helicopter. The pilot had no recent flying experience during the past three years. The pilot also did not possess a Repairman Certificate. The pilot stated that the purpose of the flight was to check the cyclic rigging on the helicopter. This was to be the helicopter's first flight in three years since it was recently taken out of storage. After start up, the helicopter rolled over. The pilot stated that the cause of the accident was the over adjusting of the cycle control during the rigging procedure. The pilot has performed all inspections and rigging on the helicopter. Review of the pilot's logbook revealed that the pilot did not hold a valid medical, airman certificate, nor the student pilot endorsements required to operate the helicopter. The pilot also did not possess a Repairman Certificate. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1995_CHI96LA046.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 ↗