A preliminary review of the tape provides no apparent evidence of an intruder in the cockpit or of any fighting among the crew, the source said. Federal officials say it's unclear if a mechanical problem or criminal act caused EgyptAir Flight 990 to crash. In a statement Sunday, National Transportation Safety Board chairman James Hall said no conclusions could be drawn from the initial review of the tape. The NTSB plans to further analyze the tape for answers about what caused the Boeing 767 jetliner to plunge into the Atlantic. The source said the pilots never seem to indicate on the tape what problem they're dealing with.
Alarms go off.
There is some kind of problem that they're dealing with. It gets progressively worse. And the tape stops. It was delivered to NTSB headquarters in Washington on Sunday. Preliminary data from the plane's flight data recorder showed that the Boeing 767's autopilot was switched off and the plane was put into a dive so steep and fast that passengers would briefly have felt weightless.