What was found
(CAN) PILOT PERFORMED AN UNSCHEDULED LANDING AFTER NOTICING INCREASING HIGH OIL PRESSURE. SUBSEQUENT INVESTIGATION REVEALED THE FRONT CRANKSHAFT OIL SEAL PARTIALLY DISLODGED FROM ITS SEAT ENGINE LOST APPROXIMATELY 2 LITRES OF OIL. THE FRONT OIL SEAL DID NOT APPEAR TO HAVE THE CORRECT ADHESIVE APPLIED TO IT AT INSTALLATION IAW MFG DIRECTIVES, REF SI1342, THE HIGH OIL PRESSURE WAS POSSIBLY DUE TO A FROZEN OIL BREATHER ALTHOUGH THIS CANNOT BE PROVEN.