Officials report no trouble before crash
An official said the pilot of Flight 587 reported no trouble before the crash, adding that recordings of conversations with the cockpit were still being reviewed.
There was no evidence of terrorism, the official said.
A law enforcement source, speaking on condition of anonymity, said two hours after the crash that the National Transportation Safety Board was placed as the lead agency in the investigation.
That moved signalled that officials initially were investigating the possibility that a catastrophic mechanical problem caused a fire or explosion prior to the crash, the official said.
