What was found
(CAN) MAINTENANCE WAS ADVISED BY THE FLIGHT CREW THAT OIL LOW PRESSURE NECESSITATED THE RT ENGINE TO BE SHUTDOWN AS PER THE QRH. VIBRATION DETECTED IMMEDIATELY BEFORE SHUT-DOWN. CONTRACT MAINTENANCE COMFIRMED A SIGNIFICANT AMOUNT OF METAL IN THE GEARBOX. AN ENGINE CHANGE IS INITIATED. MAINTENANCE STAFF, PARTS AND EQUIPMENT WILL BE TRANSPORTED.AIRCRAFT RETURNED INTO SERVICE