NTSB CAROL · Event
Event NYC99LA069
Aircraft involved
Probable cause & findings
Unanticipated in-flight turbulence.
Factual narrative
On March 3, 1999, about 1530 Eastern Standard Time, a flight attendant was seriously injured when a Saab 340A, N343BE, operating as Business Express flight 6277, encountered turbulence about 40 nautical miles northeast of Atlantic City, New Jersey. The airplane was not damaged, and the 2 pilots and 30 passengers were uninjured. Instrument meteorological conditions prevailed at the time of the accident. An instrument flight rules flight plan was filed for the flight between General Edward Lawrence Logan International Airport (BOS), Boston, Massachusetts, and Philadelphia International Airport (PHL), Philadelphia, Pennsylvania. The scheduled passenger flight was conducted under 14 CFR Part 121. According to a Business Express accident/incident irregularity report, the seat belt sign was turned on, the flight attendant had returned to her jumpseat after conducting a walk-through, and she was "waiting for the 10 out call." She was not belted in at the time. The airplane encountered turbulence, and the flight attendant was thrown from her seat. Her head hit the ceiling of the airplane, and when she came down, she hit her back on the jumpseat, which had retracted. She remained on the deck until after the airplane's arrival at the gate, when she was evacuated by emergency medical personnel. The captain stated that the severe turbulence was unexpected, and that the weather radar was on and operating normally. There were no reports of turbulence along the route of flight, and the flight had been smooth both before and after the turbulence event. According to the Safety Board Flight Data Recorder Factual Report, the accident occurred over a period of 20 seconds, while the airplane "was descending through approximately 8,000 feet and apparently in a turn from 260 degrees to 245 degrees." During the event, pitch oscillated between nose down 0.18 degrees and nose down 3.34 degrees, and left roll reached a maximum 16.17 degrees. Propeller speeds also oscillated during that timeframe. Vertical, lateral and longitudinal acceleration parameters for the recorder were not operating properly. The airplane was in a descent, the seat belt sign was turned on, and the flight attendant had returned to her seat after conducting a walk-through. She was 'waiting for the 10 out call,' and was not belted in at the time. The airplane encountered turbulence, and the flight attendant was thrown from her seat. Her head hit the ceiling of the airplane, and when she came down, she hit her back on the jumpseat, which had retracted. At the time of the accident, the airplane's weather radar was on and operating normally. There were no reports of turbulence along the route of flight, and it had been smooth both before and after the turbulence event. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1999_NYC99LA069.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 (turbulence). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- 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.
- 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 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.
- 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).
Browse the full corpus — academia portal ↗