NTSB CAROL · Event
Event ERA24LA172
Registry · N5841Z
FAA Aircraft Registry record.
Make / Model
MD HELICOPTERS INC 369FF
Year of manufacture
1999 · 25 years old at event
TCDS
H3WE · MD HELICOPTERS INC (MDHI)
Engine
ALLISON 250 SER 400HP (400 hp)
Seats / Engines
4 seats · 2 engines
Last airworthiness date
19990610
ADS-B equipped
Yes — Mode-S A78757
Registrant of record
PUERTO RICO ELECTRIC POWER AUTHORITY
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilots’ failure to ensure adequate clearance from the taxiway while performing a quick stop maneuver.
Factual narrative
The accident pilot was new to the company, and he and the chief pilot were practicing quick stop maneuvers in the helicopter. The pilots reported that while performing a quick stop maneuver over a taxiway, they heard a noise before the nose of the helicopter began turning right and the skids touched down. Postaccident examination of the helicopter by a Federal Aviation Administration inspector revealed that its horizontal stabilizer was substantially damaged. Photographs of the horizontal stabilizer and tail rotor displayed signatures consistent with both contacting the ground during the quick stop maneuver. The pilots reported that there were no preaccident mechanical malfunctions or failures of the helicopter that would have precluded normal operation. 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).
- — Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Altitude-Not attained/maintained
- — Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot
Verbatim from NTSB's published report. Source file
NTSB_2024_ERA24LA172.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 ↗