We're receiving numerous unconfirmed reports, via email and Twitter, that a flight attendant aboard an American Airlines flight at D/FW got on the intercom system and began ranting in a way that alarmed passengers and authorities.

According to passengers, the flight attendant was subdued by passengers, and the plane, Flight 2332, which was about to take off for Chicago, was returned to the gates.

FThe flight attendant "came on the PA system ranting about AA bankruptcy and then telling them the plane was going to crash," said the sister of one woman on the plane.

"She was addressing the captain, telling him not to take off, that it would not be her responsibility when the plane crashes and that it was going to crash. Then she was tackled by first-class passengers, who threw her against the wall."