NTSB CAROL · Event
Event CHI84LA135
Registry · N260RA
FAA Aircraft Registry record.
Make / Model
CESSNA 421C
Year of manufacture
1980 · 4 years old at event
Engine
CONT MOTOR GTSIO-520 SER (435 hp)
Seats / Engines
8 seats · 2 engines
Last airworthiness date
19801028
ADS-B equipped
Yes — Mode-S A28075
Registrant of record
UPWARD AVIATION LLC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Factual narrative
THE ACFT PICKED UP MODERATE TO SEVERE ICING WHICH THE PILOT THOUGHT HE HAD SHAKEN OFF AS HE CYCLED THE DEICE BOOTS. HE SAW THE ICE COME OFF OF THE WINGS BUT COULD NOT SEE THE HORIZONTAL STABILIZER. ON SHORT FINAL AT 100 KTS THE CONTROL YOKE BEGAN VIBRATING. HE INCREASED AIRSPEED & LOWERED THE NOSE BUT WAS UNABLE TO FLARE RESULTING IN A HARD LANDING. CLEAR ICE CHUNKS WERE FOUND ON THE RUNWAY WHICH APPARENTLY BROKE OFF ON LANDING. AN OPERATIONAL CHECK OF THE DEICE BOOTSPERFORMED AT A LATER DATE WAS SATISFACTORY ON BOTH THE WING & HORIZONTAL STABILIZER SURFACES. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1984_CHI84LA135.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 ↗