NTSB CAROL · Event
Event ERA21LA255
Registry · N54RV
FAA Aircraft Registry record.
Make / Model
VAN'S AIRCRAFT RV-4
Year of manufacture
1992 · 29 years old at event
Engine
LYCOMING 0-320 SERIES (180 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
19930629
ADS-B equipped
Yes — Mode-S A6D71E
Registrant of record
EBRAHIMI MAZDA
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot’s improper landing flare in variable crosswind conditions, which resulted in a hard landing.
Factual narrative
The pilot reported that after a local flight during an approach to land, he “rounded out too soon” in the landing flare, which resulted in the airplane entering an aerodynamic stall “a couple of feet above the runway.” The airplane subsequently touched down hard on the runway, the airplane skidded to a stop, and the pilot shut down the airplane and pushed it onto a taxiway. Photographs provided by the Federal Aviation Administration revealed substantial to the rear fuselage area and engine mount, in addition to a wrinkled firewall and damaged propeller. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. At the time of the accident, the pilot was landing the airplane on runway 8 with wind reported near the accident time from 320° at 7 knots, variable from 290° to 350°. 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).
- — Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot
- — Environmental issues-Conditions/weather/phenomena-Wind-Variable wind-Response/compensation
- — Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Landing flare-Not attained/maintained
Verbatim from NTSB's published report. Source file
NTSB_2021_ERA21LA255.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 (stall). 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 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- arXiv 2023 · arXiv preprint
Automating Bird Diverter Installation through Multi-Aerial Robots and Signal Temporal Logic Specifications
This paper tackles the task assignment and trajectory generation problem for bird diverter installation using a fleet of multi-rotors.
- arXiv 2023 · arXiv preprint
Variation of Critical Crystallization Pressure for the Formation of Square Ice in Graphene Nanocapillaries
Two-dimensional square ice in graphene nanocapillaries at room temperature is a fascinating phenomenon and has been confirmed experimentally.
- arXiv 2023 · arXiv preprint
Polycrystallinity enhances stress build-up around ice
Damage caused by freezing wet, porous materials is a widespread problem, but is hard to predict or control. Here, we show that polycrystallinity makes a great difference to the stress build-up process…
- arXiv 2022 · arXiv preprint
Enhanced Prediction of Three-dimensional Finite Iced Wing Separated Flow Near Stall
Icing on three-dimensional wings causes severe flow separation near stall. Standard improved delayed detached eddy simulation (IDDES) is unable to correctly predict the separating reattaching flow due…
- Embry-Riddle Scholarly Commons 2021 · Journal article (JAAER)
Analysis on the Negative Emotional, Physiological, and Cognitive Responses Elicited from of the Activation of a Stall Alarm
Failing to identify an aerodynamic stall can lead to the inability of an aircraft to sustain flight. To warn pilots of an impending or fully-developed stall, many aircraft have safety devices installe…
Browse the full corpus — academia portal ↗