WASHINGTON?American Airlines Flight 587 crashed just 18 seconds after hitting the second wake from a jet that took off before it, according to data released Tuesday by the National Transportation Safety Board.

The American plane was aloft for just 103 seconds before crashing Nov. 12, killing all 260 people on board and five on the ground, new NTSB data show. Investigators are focusing on the tail, which sheared off the plane before the crash.

Information from the cockpit and flight data recorders show the plane ran into two wakes from a Japan Air Lines 747 that took off 105 seconds before the American Airbus A300-600. The second wake occurred 85 seconds after the American plane took off and 18 seconds before it crashed.

After encountering the second wake, the plane experienced some side to side movements, which gradually got stronger and coincided with movements of the rudder.