NTSB Identification: IAD02LA039.
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Accident occurred Monday, April 01, 2002 in Atlantic Ocean
Probable Cause Approval Date: 08/26/2003
Aircraft: Boeing 747-400, registration: G-BNLS
Injuries: 1 Serious,213 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

About 20 minutes after departure, the airplane encountered "moderate turbulence" while climbing through Flight Level (FL) 350. During the turbulence encounter, a passenger was returning to her seat when she fell and broke her right ankle. The flight crew returned to the airport, and the airplane landed without further incident. Turbulence was not forecast for the route of flight, and the seat belt sign was illuminated for the entire fight.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The airplane's encounter with turbulence, while climbing to an assigned altitude.

Full narrative available

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