<human>:  How did the Air France Flight 447 crash?
<bot>: Air France 447 crashed into the Atlantic Ocean. The Airbus A330 was flying from Rio de Janeiro, Brazil to Paris, France. The pilots had reported a problem with the plane’s airspeed indicator, but it was not fixed. The pilots then attempted to return to Rio, but the plane stalled and crashed. The plane was carrying 228 people when it crashed, and all 228 people were killed.