LGT HAS OIL PRESSURE LIGHT FOR #1 ENG. SHUTDOWN; RETURN LAND.

Narrative

WHILE CLBING THROUGH FL310 ENRTE TO FL330 APPROX 20 MINS OUT OF SEA ARPT; OIL PRESSURE LIGHT FOR THE #1 ENG ILLUMINATED. AFTER CONFIRMING OIL PRESSURE LOSS ON THE FE'S PANEL; THE THROTTLE WAS RETARDED TO IDLE. BOTH #1 OIL QUANTITY AND PRESSURE HAD DECREASED TO NEAR '0.' THE ENG WAS SHUT DOWN; ALL CHKLIST PROCS ACCOMPLISHED; AND WE RETURNED TO SEA WITHOUT INCIDENT. AN FAA AIRWORTHINESS INSPECTOR WAS IN THE JUMPSEAT DURING THE ENTIRE FLT. UPON LNDG AND PARKING; MAINT FOUND WHAT WAS APPARENTLY AN OIL FILTER LEAK CAUSED BY LOOSENED BOLTS. THE APPROPRIATE REPAIR WORK WAS ACCOMPLISHED AND WE LOADED WHAT WAS LEFT OF OUR PAX AND TOOK OFF AGAIN FOR LAX. THE TKOF AND DEP WAS NORMAL. AT ABOUT THE SAME ALT AND ELAPSED FLT TIME; THE #1 ENG OIL FAILED AGAIN. THE SAME ENG SHUTDOWN PROCS WERE ACCOMPLISHED AND WE RETURNED TO SEA. DURING BOTH INCIDENTS; EMER EQUIP WAS REQUESTED TO BE STANDING BY; BUT AN EMER WAS NOT DECLARED. THE WX WAS VMC AND ATC/APCH PERSONNEL WERE VERY COOPERATIVE. THE FAA INSPECTOR WAS ONBOARD FOR THE SECOND FLT AS WELL. HE WAS VERY PLEASED WITH THE FLC'S PERFORMANCE AND THE DECISIONS TO RETURN TO SEA. HE WAS OPENLY DISTURBED BY THE MAINT ASPECTS OF THE PROB. AS A SIDE NOTE; AFTER THE SECOND ENG SHUTDOWN AND RETURN TO SEA; PARAMEDICS WERE REQUESTED FOR A LADY WITH A HEART CONDITION ENRTE TO LAX FOR MEDICAL REASONS WHO HAD BEEN ON BOARD FOR BOTH ENG PROBS. SHE WAS EXPERIENCING CHEST PAINS AND THE PARAMEDIC ASSISTANCE WAS ONLY A PRECAUTION.