NTSB CAROL · Event
Event DCA12CA086
Aircraft involved
Probable cause & findings
an inadvertent encounter with convective turbulence.
Factual narrative
On June 7, 2012, at approximately 1600 coordinated universal time, US Airways flight 1078, a Boeing 757-200, N936UW, encountered turbulence during descent into Philadelphia International Airport (KPHL), Philadelphia, Pennsylvania. One flight attendant in the aft galley suffered a broken ankle and two other flight attendants suffered minor injuries. The other five crewmembers and 178 passengers were not injured and the airplane was not damaged. The flight was operating under the provisions of 14 CFR Part 121 as a regularly scheduled passenger flight from Luis Muñoz Marín International Airport (LRSM), San Juan, Puerto Rico, to KPHL. According to the operator, the flight crew weather briefing indicated no turbulence forecast for the route of flight. The departure, cruise, and initial descent portions of the flight were uneventful. The captain reportedly turned on the seatbelt sign when the flight was passing through flight level 180. About 50 miles outside of KPHL, the flight crew identified a small band of cumulus clouds between 13,000 feet and 9,000 feet. The captain made a public-address announcement to the passengers reminding them to have their seatbelts fastened and alerted them to the possibility of some minor turbulence as they passed through the clouds. Prior to descending through 10,000 feet, the flight encountered moderate turbulence for approximately 3-5 seconds. There were no pilot reports or advisories from air traffic control about turbulence in the area. When the turbulence was encountered, the D flight attendant (FA) was in the aft galley performing final landing preparations and was lifted into the air and thrown the floor near the last row of passenger seats. She was assisted by other FA's but remained on the floor for the remainder of the flight due to her injured leg. Paramedics met the airplane at the gate and transported the flight attendant to the hospital where she was diagnosed with fractures to her tibia and fibula. On June 7, 2012, at approximately 1600 coordinated universal time, US Airways flight 1078, a Boeing 757-200, N936UW, encountered turbulence during descent into Philadelphia International Airport (KPHL), Philadelphia, Pennsylvania. One flight attendant in the aft galley suffered a broken ankle and two other flight attendants suffered minor injuries. The other five crewmembers and 178 passengers were not injured and the airplane was not damaged. The flight was operating under the provisions of 14 CFR Part 121 as a regularly scheduled passenger flight from Luis Muñoz Marín International Airport (LRSM), San Juan, Puerto Rico, to KPHL. According to the operator, the flight crew weather briefing indicated no turbulence forecast for the route of flight. The departure, cruise, and initial descent portions of the flight were uneventful. The captain reportedly turned on the seatbelt sign when the flight was passing through flight level 180. About 50 miles outside of KPHL, the flight crew identified a small band of cumulus clouds between 13,000 feet and 9,000 feet. The captain made a public-address announcement to the passengers reminding them to have their seatbelts fastened and alerted them to the possibility of some minor turbulence as they passed through the clouds. Prior to descending through 10,000 feet, the flight encountered moderate turbulence for approximately 3-5 seconds. There were no pilot reports or advisories from air traffic control about turbulence in the area. When the turbulence was encountered, the D flight attendant (FA) was in the aft galley performing final landing preparations and was lifted into the air and thrown the floor near the last row of passenger seats. She was assisted by other FA's but remained on the floor for the remainder of the flight due to her injured leg. Paramedics met the airplane at the gate and transported the flight attendant to the hospital where she was diagnosed with fractures to her tibia and fibula. 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-Convective turbulence-Effect on personnel - C
Verbatim from NTSB's published report. Source file
NTSB_2012_DCA12CA086.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 ↗