IAD04LA050
2004-08-29 · Clyde, New York, United States · Serious · 1 aircraft · Status: Completed
Current FAA registration · N810AE
- Make / Model
- EMBRAER EMB-135KL
- Year of manufacture
- 2001 · 3 years old at event
- Engine
- ROLLS-ROYC AE3007 SER
- Seats / Engines
- 37 seats · 2 engines
- Last airworthiness date
- 20011101
- ADS-B equipped
- Yes — Mode-S AB0961
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
An unexpected encounter with clear air turbulence.
Factual narrative
!!THIS CASE WAS MODIFIED ON MARCH 8, 2006!! On August 29, 2004, about 1415 eastern daylight time, an Embraer EMB-135KL, N810AE, operated by American Eagle Airlines as flight 4568, was undamaged following an encounter with turbulence near Clyde, New York. There were no injuries to the 2 certificated airline transport pilots and 16 passengers; while 1 flight attendant was seriously injured. Visual meteorological conditions prevailed, and an instrument flight rules flight plan was filed for the scheduled passenger flight, which originated at Toronto/Pearson International Airport (CYYZ), Toronto, Canada, destined for Boston/Logan International Airport (BOS), Boston, Massachusetts. The flight was conducted under 14 CFR Part 121. According to an overview report provided by the operator, the airplane was in cruise flight at flight level 290, when the captain observed a storm about 25 to 50 miles ahead. He then made a cabin announcement to fasten seatbelts, and advised the flight attendant via interphone to take her seat. While the flight attendant was on the phone, the airplane encountered severe turbulence, and she fell to the floor. A beverage service cart subsequently fell on her legs, resulting in serious injury. The captain then elected to divert the flight to Albany International Airport (ALB), Albany, New York so the flight attendant could receive medical attention. While in cruise flight, the captain observed a storm about 25 to 50 miles ahead. He then made a cabin announcement to fasten seatbelts, and advised the flight attendant via interphone to take her seat. While on the phone, the airplane encountered turbulence, and the flight attendant fell to the floor. A beverage service cart subsequently fell on her legs, resulting in serious injury. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2004_IAD04LA050.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Search this event elsewhere
External sources are reported, not agency: signal that something happened, not fact about what happened.
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Related research
Matched on aircraft type or causal vocabulary (turbulence). All research papers
- arXiv 2026 · arXiv preprint Direct Numerical Simulations of Ice-Ocean Boundary Turbulence
Turbulent heat and freshwater transport at ice-ocean interfaces controls glacier and iceberg melt rates, yet the underlying physics remains poorly constrained.
- arXiv 2025 · arXiv preprint Explainable LiDAR 3D Point Cloud Segmentation and Clustering for Detecting Airplane-Generated Wind Turbulence
Wake vortices - strong, coherent air turbulences created by aircraft - pose a significant risk to aviation safety and therefore require accurate and reliable detection methods.
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER) Political Turbulence and Aviation Safety: A Cross-National Analysis of Political Stability's Effects on Aviation Accidents
To what extent does political stability affect aviation safety? This research aims to link domestic political conditions and public safety through the consideration of aviation accident frequency.
- arXiv 2024 · arXiv preprint Does small-scale turbulence matter for ice growth in mixed-phase clouds?
Representing the glaciation of mixed-phase clouds in terms of the Wegener-Bergeron-Findeisen process is a challenge for many weather and climate models, which tend to overestimate this process because…
- arXiv 2023 · arXiv preprint Effects of electrostatic interaction on clustering and collision of bidispersed inertial particles in homogeneous and isotropic turbulence
In sandstorms and thunderclouds, turbulence-induced collisions between solid particles and ice crystals lead to inevitable triboelectrification.
- SKYbrary (Eurocontrol) 2023 · SKYbrary article Wake Vortex Turbulence — SKYbrary Knowledge Base
SKYbrary wake vortex turbulence comprehensive article — generation mechanics, dissipation factors, separation standards (ICAO LIGHT/MEDIUM/HEAVY/SUPER + recategorisation RECAT-EU).