What was found
(CAN) NO DETAILS ABOUT THE EVENT WAS REPORTED EXCEPT FIRE WAS OBSERVED FROM THE EXHAUST. DURING THE TROUBLESHOOTING, ENGINE INTERNAL DAMAGE WAS FOUND (SEVERAL HP BLADES FRACTURED & BLACK-CARBON SOOTED, LP BLADES SEVERELY DAMAGED). PT BLADES 1ST & 2ND STAGE SHOWED DAMAGE. THE PT ROTOR DOES NOT TURN FREELY. NO 6 &7 BEARING VENT TUBE WERE NOT FRACTURED OR BLOCKED. TROUBLESHOOTING STILL ONGOING.