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Aviation Accident Final Report - National Transportation Safety Board: https://app.ntsb.gov/pdf
NTSB Identification: DCA16CA209
Scheduled 14 CFR Part 121: Air Carrier operation of American Airlines
Accident occurred Wednesday, August 03, 2016 in Grand Cayman Island (GCM), Cayman Islands
Probable Cause Approval Date: 01/23/2017
Aircraft: AIRBUS A319 115, registration: N9010R
Injuries: 1 Serious, 7 Minor, 121 Uninjured.
NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.
On August 3, 2016 at 7:45 pm eastern daylight time, American Airlines flight 1007, an Airbus A319, N9010R, encountered clear air turbulence on descent to the Owen Roberts International Airport (GCM), George Town, Cayman Islands. As a result of the turbulence, one passenger received serious injuries and four passengers and three flight attendants received minor injuries. None of the other passengers and crew were injured and the airplane was not damaged.
The operator reported that while over international waters, the flight experienced moderate to severe turbulence for approximately 6-8 seconds while descending through FL180 into GCM. Both the autopilot and weather radar were on and operating at the time. The flight was in visual meteorological conditions and the crew had no warning of turbulence. The seat belt sign was on and had been on for approximately 10 minutes before the turbulence event occurred. The flight landed safely without further incident. The injured passenger was taken to the hospital and diagnosed with a fractured vertebra.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
an inadvertent encounter with clear air turbulence.