NTSB CAROL · Event
Event DCA18CA289
Registry · N950NN
FAA Aircraft Registry record.
Make / Model
BOEING 737-823
Year of manufacture
2014 · 4 years old at event
Engine
CFM INTL CFM56-7B24E
Seats / Engines
162 seats · 2 engines
Last airworthiness date
20140427
ADS-B equipped
Yes — Mode-S AD35E0
Registrant of record
WILMINGTON TRUST CO TRUSTEE
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
an inadvertent encounter with wake turbulence.
Factual narrative
On September 10, 2018, at 9:00 pm Mountain Standard Time (MST), American Airlines flight 2197, a Boeing 737-800, N950NN, encountered wake turbulence while descending through 3,100 feet on approach to the Phoenix Sky Harbor International Airport (KPHX), Phoenix, Arizona. A flight attendant was securing items in the galley and was seriously injured as a result of the turbulence. There were no injuries to the other passengers or crew, and the airplane was not damaged. The flight was operating under 14 CFR Part 121 as a regularly scheduled passenger flight from Seattle-Tacoma International Airport (KSEA), Seattle, Washington, to KPHX. According to the flight crew, the seat belt sign was on, and the "prepare for landing" announcement was made to the flight attendants. The airplane was approximately three miles behind a narrow body Airbus, in landing configuration when the turbulence occurred. After landing, the flight crew were notified that one of the flight attendants had been injured. Paramedics met the flight at the gate and the flight attendant was transported to the hospital where she was diagnosed with a broken left rib. On September 10, 2018, at 9:00 pm Mountain Standard Time (MST), American Airlines flight 2197, a Boeing 737-800, N950NN, encountered wake turbulence while descending through 3,100 feet on approach to the Phoenix Sky Harbor International Airport (KPHX), Phoenix, Arizona. A flight attendant was securing items in the galley and was seriously injured as a result of the turbulence. There were no injuries to the other passengers or crew, and the airplane was not damaged. The flight was operating under 14 CFR Part 121 as a regularly scheduled passenger flight from Seattle-Tacoma International Airport (KSEA), Seattle, Washington, to KPHX. According to the flight crew, the seat belt sign was on, and the "prepare for landing" announcement was made to the flight attendants. The airplane was approximately three miles behind a narrow body Airbus, in landing configuration when the turbulence occurred. After landing, the flight crew were notified that one of the flight attendants had been injured. Paramedics met the flight at the gate and the flight attendant was transported to the hospital where she was diagnosed with a broken left rib. 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-Wake turbulence-Effect on personnel - C
Verbatim from NTSB's published report. Source file
NTSB_2018_DCA18CA289.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 (wake turbulence, 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.
- NASA NTRS 2019 · Technical Memorandum (TM)
A preliminary study of a wake vortex encounter hazard boundary for a B737-100 airplane
A preliminary batch simulation study was conducted to define the wake decay required for a Boeing 737-100 airplane to safely encounter a Boeing 727 wake and land.
- NASA NTRS 2018 · Other
A Numerical Simulation Study to Develop an Acceptable Wake Encounter Boundary for a B737-100 Airplane
The National Aeronautics and Space Administration (NASA) is conducting research with the goal of enabling safe improvements in the capacity of the nation's air transportation system.
- NASA NTRS 2019 · Conference Paper
Aircraft wake turbulence minimization by aerodynamic means
The paper reviews NASA's efforts on wake vortex turbulence minimization by aerodynamic design or retrofit modifications to large transport aircraft.
- NASA NTRS 2019 · Conference Paper
Wake Turbulence Mitigation for Arrivals (WTMA)
The preliminary Wake Turbulence Mitigation for Arrivals (WTMA) concept of operations is described in this paper. The WTMA concept provides further detail to work initiated by the Wake Vortex Avoidance…
- NASA NTRS 2019 · Conference Paper
Aircraft wake turbulence avoidance
Aircraft wake turbulence /trailing vortex systems/ avoidance during flight, describing procedures for pilots and tower operators
- NASA NTRS 2019 · Conference Paper
Aircraft wake turbulence progress and plans
Aircraft wake turbulence and trailing vortices, investigating physical characteristics, hazard potential and avoidance techniques
Browse the full corpus — academia portal ↗