As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 4 ENG SLOW/STEADY OIL LEAK FROM 5.6 GALS DOWN TO 0.6 GALS. OIL TEMP CONSTANT AT 75 TO 79C AND OIL PRESS STEADY AT 47 TO 49 PSI. ACCOMPLISHED PRECAUTIONARY ENG SHUTDOWN IAW AOM VOL I, LOW OIL QTY PG 3-109, IN FLT ENG SHUTDOWN PG 3-97 AND WINDMILLING ENG PROCEDURES PG 3-114. ENG RESTARTED IAW IN-FLIGHT START PROCEDURES P 3-98 FOR NORMAL DESCENT, APPROACH AND LANDING. REMOVED AND REPLACED MAIN GEARBOX IAW P/W E/M 72-00-00. ENGINE TEST RUN PERFORMED IAW P/W E/M 72-00-00, TESTING 02. NO OIL USAGE NOTED AT THIS TIME.