What was found
(CAN) WHILE ON CLIMB AFTER DEPARTING, THE WAS A BANG FROM THE RT ENGINE, TOTAL LOSS OF POWER AND FIRE WARNING. THE FWD PART OF THE ENGINE WAS SEEN TO BE ON FIRE, WHICH WAS EXTINGUISHED BY (2) SHOTS OF THE EXTINGUISHER SYSTEM. THE AIRCRAFT RETURNED TO DEPARTURE AND MADE AN EMERGENCY LANDING WITH NO FURTHER INCIDENT. INSPECTION REVEALED THAT THE LP IMPELLER CASING WAS PUNCTURED IN SEVERAL PLACES AROUND ITS EDGE. THE COWLINGS WERE ALSO SEVERELY DAMAGED BY THE FIRE. THIS ENGINE WILL BE RETURNED TO MFG FOR INVESTIGATION.