What was found
(CAN) AFTER PROPS WENT OUT OF SYNC, ENG DRIVEN COMP LOW OIL LIGHT ILLUMINATED. EDC DISCONNECT WAS SELECTED, FLUCTUATING GB OIL PRESSURE WAS OBSERVED. PRESS FLICKERED FROM 200 PSI TO 120 PSI ABOUT EVERY 5 SECONDS. SHUTDOWN CARRIED OUT, AC RETURNED TO BASE OEI. TEARDOWN, PRELIMINARY REPORT INDICATES STRIPPED SPLINES ON ALTERNATOR DR SHAFT ASSY, ALTERNATOR DR SHAFT NUT FOUND LOOSE, REAR BRG ALTERNATOR DR ASSY FOUND LOOSE DURING DISMANTLING. INCIDENT OCCURED 35.6 HOURS AFTER NOSE CASE WAS REPAIRED FOR EXCESSIVE (.025') RADIAL PLAY OF PROP SHAFT, DURING INVESTIGATION FOR OIL TRANSFER FROM EDC TO REDUCTION GB. EXCESS RADIAL PLAY WAS DISCOVERED WHILE CHANGING PROP SHAFT SEAL FOR OIL LEAKAGE FROM FRONT OF NOSE CASE.