NTSB CAROL · Event
Event MIA94LA060
Registry · N525BW
FAA Aircraft Registry record.
Make / Model
CESSNA 525
Year of manufacture
2000
Engine
WILLIAMS FJ 44 SERIES
Seats / Engines
8 seats · 2 engines
Last airworthiness date
20001210
ADS-B equipped
Yes — Mode-S A69BAF
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
THE FLIGHT INSTRUCTOR'S DELAYED REACTION TO TAKE CONTROL OF THE HELICOPTER. CONTRIBUTING FACTORS WERE THE STUDENT PILOT'S IMPROPER USE OF CYCLIC AND COLLECTIVE CONTROLS AND HIS FAILURE TO RELEASE THE FLIGHT CONTROLS TO THE FLIGHT INSTRUCTOR.
Factual narrative
On January 24, 1994, about 1220 eastern standard time, N525BW, a Robinson R-22 Beta, operated by London Helicopters Inc. experienced a rollover while hovering on a 14 CFR Part 91 instructional flight. Visual meteorological conditions prevailed at the time and no flight plan was filed. The helicopter was substantially damaged and the instructor reported no injuries. The student pilot received minor injuries. The flight originated about 30 minutes earlier. The instructor pilot stated that they were practicing hovering autorotations and the student pilot executed the maneuver wrong. The student turned the throttle on instead of off, and then when requested would not release the flight controls. The right rear skid dug in the ground and the helicopter rolled over. THE CERTIFIED FLIGHT INSTRUCTOR DEMONSTRATED A HOVERING AUTOROTATION, THEN HE INSTRUCTED THE STUDENT PILOT TO EXECUTE THE MANUEVER. THE STUDENT PILOT ATTEMPTED THE HOVERING AUTOROTATION BUT OPENED THE THROTTLE INSTEAD OF CLOSING THE THROTTLE AS REQUIRED. THE INSTUCTOR PILOT ATTEMPTED TO REGAIN CONTROL BUT THE STUDENT PILOT DID NOT RELINQUISH CONTROL. THE HELICOPTER PITCHED UP, ROTATED 360 DEGREES TO THE LEFT, STRUCK THE GROUND, THEN ROLLED OVER AND CAME TO REST ON ITS RIGHT SIDE. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1994_MIA94LA060.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 (icing). 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 2026 · Contractor Report (CR)
Icing Physics Studies Using the 3D SIDRM Test Article: 2023 Icing Tests Analysis
In-flight icing is an important safety issue and is a factor that affects aircraft design and performance. Newer regulations are driving a need for improvements in airframe and engine icing simulation…
- arXiv 2025 · arXiv preprint
Multi-Agent Deep Reinforcement Learning for UAV-Assisted 5G Network Slicing: A Comparative Study of MAPPO, MADDPG, and MADQN
The growing demand for robust, scalable wireless networks in the 5G-and-beyond era has led to the deployment of Unmanned Aerial Vehicles (UAVs) as mobile base stations to enhance coverage in dense urb…
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Mathematical Model on the Temporal Dynamics of Aviation Competitive Pricing
This study investigates the competitive dynamics of airport pricing using U.S. airport data to validate the findings. It employs linear and nonlinear ordinary differential equation models to analyze t…
- NASA NTRS 2025 · Presentation
NASA Icing Update – March 2025
This NASA Icing Update was prepared for presentation to the SAE International AC-9C Inflight Icing Technology Committee. This update includes the following topics: planned Rotational Icing Scaling tes…
- arXiv 2024 · arXiv preprint
An energy-stable phase-field model for droplet icing simulations
A phase-field model for three-phase flows is established by combining the Navier-Stokes (NS) and the energy equations, with the Allen-Cahn (AC) and Cahn-Hilliard (CH) equations and is demonstrated ana…
- NASA NTRS 2024 · Presentation
NASA Icing Update – Oct 2024
This presentation provides a status update on select NASA icing research activities for the SAE AC-9C Icing Technical Committee Meeting on Oct 21, 2024.
Browse the full corpus — academia portal ↗