What was found
(CAN) DURING A SCHEDULED INSPECTION OF AIRCRAFT, MAINTENANCE DISCOVERED THAT PN 215T63010-66 OIL LINE OF THE OIL REPLENISHMENT SYS LOCATED ON THE LT AND RT ENGINES WAS CHAFING AND WORN. THE TITANIUM ANGLE PN 87140552-101 OF THE LOWER ENGINE COWLINGS IS STRIKING THE OIL LINE WHEN THE COWLING WAS CLOSED. BOTH THE OIL LINE AND THE TITANIUM ANGLES HAVE CHAFING MARKS. AIRFRAME TIME AND ENGINE TIME 420.2 HOURS, CYCLES 210. MFG HAS BEEN ASKED TO SUPPLY A REPAIR EO FOR CORRECTIVE ACTION TO THIS PROBLEM.