What was found
(CAN) PILOT LANDED & SHUT DOWN NORMALLY. HE THEN NOTICED FLUID RUNNING DOWN SIDE OF FUSELAGE. INVESTIGATION REVEALED THAT LEAKING OIL WAS COMING FROM THE MGB OIL PRESSURE INDICATING LINE, LOCATED UNDER THE TRANSMISSION RESTRAINT. THE CHAFING OF THE FOIL FLEX LINE GOING TO THE FREEWHEELING UNIT LIKELY CAUSED THE OIL PRESSURE INDICATING LINE TO FAIL AND LEAK OIL. THE LINE WAS REPLACED. THE DG CLAMPS ATTACHING THE OIL FLEX LINE TO THE TRANSMISSION RESTRAINT WERE RE-ARRANGED TO GIVE MORE CLEARANCE BETWEEN THE TWO LINES. THE OIL LEVEL WAS ADJUSTED, THE HELICOPTER WASHED, GROUND RUN AND RETURNED TO SERVICE.