As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER ACFT HAD DOCKED, MAINTENANCE NOTICED AN OIL LEAK FROM THE NR 1 ENGINE COWLING. UPON INVESTIGATION IT WAS FOUND THAT THE SOURCE OF THE OIL LEAK WAS THE AUTOFEATHER TORQUE PRESSURE SWITCH. THE SWITCH WAS REPLACED AND A FUNCTION CHECK OF THE SYS CARRIED OUT. THE ACFT WAS THEN RETURNED TO SERVICE. THIS WAS THE SECOND AUTOFEATHER SWITCH THAT THIS OPERATOR HAS HAD FAIL IN THE PAST 6 MONTHS. THE CURRENT SWITCH THAT WAS REMOVED.