A flight attendant conducting a routine head count entered the cockpit and saw the man sitting in the jump seat behind the captain's seat. He identified himself as an Air France pilot.

Suspicious airline employees, sniffing out a fake, questioned the man.

The flight crew told him he would have to fill out paperwork, but the man didn't have credentials, police said. The captain then told him to leave the area, and ordered him off the plane before it left the gate. The man became irate. The crew called police.

Frenchman caught on plane in real life sequel to 'Catch Me If You Can' - CNN.com