What was found
(CAN) AFTER DEPARTURE IN CRUISE AT 35000 FT, THE CREW REPORTED THAT A LOUD BANG WAS HEARD. THE PILOT TOOK MANUAL CONTROL AND RETURNED TO LAND SAFELY AT THE DEPARTING AIRPORT. VISUAL INSPECTION AFTER LANDING REVEALED THAT A LARGE PORTION OF THE RUDDER SURFACE WAS MISSING. A PORTION OF THE RUDDER STRUCTURE REMAINED ATTACHED BETWEEN LOWER HINGE AND THE 3 SERVO-CONTROL ATTACHMENT POINTS. THE EVENT IS SUBJECT TO A FORMAL INVESTIGATION. MFG HAS SENT A TEAM OF SPECIALISTS TO ASSIST THE AUTHORITIES WITH THEIR INVESTIGATION.