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NTSB Report
September 29, 2011 · Boeing 737-823 · N804NN
Miami, FL
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
September 29, 2011
Injury Outcomes
1 injury (1 serious injury), 165 uninjured
Location
Miami, FL
Aircraft
Boeing 737-823
Tail Number
N804NN
Operator
American Airlines
Injuries
Serious
NTSB Number
ERA11CA511
According to crew statements, the airplane was descending through about 16,000 feet mean sea level in clear air when it encountered two jolts of turbulence that did not damage the airplane but resulted in a flight attendant being lifted off the deck and hitting the ceiling, then being thrown to the floor and breaking her ankle. The flight attendant was in the galley preparing for landing, and the seat belt sign was illuminated. The captain had previously deviated for weather, and the airplane was operating between cloud buildups at the time. The captain also noted that the air was relatively smooth, and that radar returns indicated that the airplane was more than 20 miles from any significant weather.
NTSB Probable Cause
Environmental issues-Conditions/weather/phenomena-Turbulence-Clear air turbulence-Effect on personnel - C
Full Narrative
According to crew statements, the airplane was descending through approximately 16,000 feet in clear air when it encountered two jolts that did not damage the airplane, but resulted in a flight attendant being lifted off the deck and hitting the ceiling, then being thrown to the floor and breaking her ankle. The flight attendant was in the galley preparing for landing, and the seat belt sign was illuminated. The captain had previously deviated for weather, and the airplane was operating between cloud buildups at the time. The captain also noted that the air was relatively smooth, and that radar returns indicated that the airplane was greater than 20 miles from any significant weather.
Flight
Event TypeAccident
Event Time16:27 EDT
Nearest AirportMiami International (0nm)
Flight Plan FiledIFR
Flight Plan ActivatedYes
Aircraft FireNo
Aircraft
AircraftBoeing 737-823
Tail NumberN804NN
Aircraft CategoryAir
OperatorAmerican Airlines
Operating RulePart 121
Engines2
Engine TypeTurbofan
Engine DetailsCfm Intl · CFM56-7B24/3 · Turbofan · 22800 | Cfm Intl · CFM56-7B24/3 · Turbofan · 22800
Seats162
People & Injuries
Injury Summary1 injury (1 serious injury), 165 uninjured
Fatal0
Serious1
Minor0
Uninjured165
Total166
Crew 1Age 52 · First Class · None
Conditions
ConditionsVMC
LightDaylight
WindCalm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO