NTSB CAROL · Event
Event DCA17CA194
Aircraft involved
Probable cause & findings
an inadvertent encounter with turbulence.
Factual narrative
On September 4, 2017 at about1531 central daylight time, Delta Air Lines flight 2121, a Boeing MD-90, N938DN, encountered turbulence during final approach into El Paso International Airport (ELP), El Paso, Texas. Of the 143 passengers and crew onboard, one flight attendant sustained serious injuries. The flight was operating under 14 CFR Part 121 as a regularly scheduled passenger flight from Atlanta Hartsfield-Jackson International Airport (ATL), Atlanta, Georgia, to ELP. According to the operator, while on approach the flight crew completed the cabin notification and turned the seatbelt sign on. While one of the flight attendants was performing final safety checks and walking to her jumpseat, the airplane encountered turbulence, resulting in the flight attendant hitting her head on the overhead bin. The flight attendant continued to her seat for the remainder of the approach and landing. The flight crew was notified of the event during taxi and they requested paramedics meet the flight at the gate. The flight attendant was transported to the hospital where she was diagnosed with head injuries and admitted for observation. On September 4, 2017 at about1531 central daylight time, Delta Air Lines flight 2121, a Boeing MD-90, N938DN, encountered turbulence during final approach into El Paso International Airport (ELP), El Paso, Texas. Of the 143 passengers and crew onboard, one flight attendant sustained serious injuries. The flight was operating under 14 CFR Part 121 as a regularly scheduled passenger flight from Atlanta Hartsfield-Jackson International Airport (ATL), Atlanta, Georgia, to ELP. According to the operator, while on approach the flight crew completed the cabin notification and turned the seatbelt sign on. While one of the flight attendants was performing final safety checks and walking to her jumpseat, the airplane encountered turbulence, resulting in the flight attendant hitting her head on the overhead bin. The flight attendant continued to her seat for the remainder of the approach and landing. The flight crew was notified of the event during taxi and they requested paramedics meet the flight at the gate. The flight attendant was transported to the hospital where she was diagnosed with head injuries and admitted for observation. 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).
- C Environmental issues-Conditions/weather/phenomena-Turbulence-(general)-Effect on personnel - C
Verbatim from NTSB's published report. Source file
NTSB_2017_DCA17CA194.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 ↗