NTSB CAROL · Event
Event FTW85LA239
Aircraft involved
Factual narrative
WHILE UNDERGOING HELICOPTER TRANSITION TRAINING FROM THE PREVIOUS OWNER, WHO HOLDS NO INSTRUCTOR CERTIFICATE, THE NEW OWNER'S SON HAD BEEN PRACTICING PWR RECOVERY AUTOROTATIONS. THE ENG FAILED TO RESPOND TO APPLICATION OF THROTTLE, AND A FULL AUTOROTATIVE LANDING WAS ATTEMPTED, UNSUCCESSFULLY. THE HELICOPTER SUSTAINED SUBTANTIAL DAMAGE IN A HARD LANDING. NO MECHANICAL MALFUNCTION WAS DISCOVERED DURING THE POST ACCIDENT INSPECTION. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1985_FTW85LA239.txt.
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Related research
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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 2019 · Reprint (Version printed in journal)
Deep stall characteristics of MU-300
The deep stall characteristics of the MU-300 Diamond aircraft are described. The MU-300 obtained type certification from the FAA in 1981, and from Canada, West Germany, and England in 1983.
- NASA NTRS 2019 · Technical Memorandum (TM)
Reporter Concerns in 300 Mode-Related Incident Reports from NASA's Aviation Safety Reporting System
A model has been developed which represents prominent reporter concerns expressed in the narratives of 300 mode-related incident reports from NASA's Aviation Safety Reporting System (ASRS).
- NTSB Aircraft Accident Reports 2021 · Accident report
Crash of Atlas Air Flight 3591, Boeing 767-300 (N1217A)
Atlas Air 3591 crashed into Trinity Bay, Texas, February 23, 2019. Investigation of the in-flight loss-of-control crash of Atlas Air 3591 into Trinity Bay, Texas.
- NASA NTRS 2014 · Presentation
300 FT Runway Visual Range (RVR) Experiment Review
- 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…
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