An airline captain has reportedly died at the controls despite a flight attendant with medical training trying to revive him. In a recording, the first officer is heard radioing in the emergency to ground control explaining that the captain has become 'incapacitated.' American Airlines flight 550 was en-route to Boston from Phoenix earlier this morning when the pilot was taken ill at the controls. An air stewardess - apparently a former nurse - fought to save his life but to no avail.