What was found
ON FLIGHT 3211 THE CREW WAS ADVISED BY DEPARTURE CONTROL THAT AN AA PILOT SAID IT LOOKED LIKE A LOT OF FUEL WAS COMING OUT OF THE RIGHT WING. A PASSENGER ALSO NOTIFED THE FLIGHT ATTENDANT ABOUT A LOT OF WHITE VAPOR (FUEL) COMING FROM THE RIGHT WING. THE FLIGHT ATTENDANT CONFIRMED THIS. THE CREW COMPLIED WITH THE FUEL LEAK CHECK LIST AND RETURNED TO DFW. THE AIRCRAFT LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE RIGHT WING FLAP VALVE IAW EMB 140 AMM 28-11-04. THE OPERATIONAL CHECK WAS GOOD NO LEAKS NOTED. THE AIRCRAFT WAS RETURNED TO SERVICE.