NTSB CAROL · Event
Event SEA94LA166
Registry · N9029F
FAA Aircraft Registry record.
Make / Model
AIRBUS A319-115
Year of manufacture
2015
TCDS
A28NM · AIRBUS SAS
Engine
CFM INTL CFM56-5B7/3
Seats / Engines
147 seats · 2 engines
Last airworthiness date
20150303
ADS-B equipped
Yes — Mode-S AC7A33
Registrant of record
AMERICAN AIRLINES INC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
THE PILOT NOT MAINTAINING A PROPER DESCENT RATE AND HIS DELAYED REMEDIAL ACTION.
Factual narrative
On July 3, 1994, at about 1430 hours mountain daylight time, a Hughes 369HS helicopter, N9029F, made a hard landing during a practice autorotation at Salt Lake City Airport #2. Visual meteorological conditions prevailed at the time and no flight plan was filed for the local training flight. The helicopter was substantially damaged, but neither the pilot or the flight instructor were injured. The pilot reported that he was preparing for a part 135 check ride and was practicing autorotations with the company check pilot. An autorotation was started at about 500 to 600 feet above the ground. At about 100 to 150 feet above the ground, the instructor pilot realized that they were descending too fast. He added power to slow their descent but the helicopter landed hard, damaging the skids and the tail boom. DURING A PRACTICE AUTOROTATION, A HIGH DESCENT RATE DEVELOPED. THE INSTRUCTOR PILOT ADDED POWER BUT THE HELICOPTER STILL LANDED HARD ENOUGH TO SUBSTANTIALLY DAMAGE THE HELICOPTER. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1994_SEA94LA166.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 ↗