What was found
PRECAUTIONARY SHUTDOWN NR 3 ENGINE ON SHORT FINAL. OIL PRESSURE STARTED FLUCTUATING BETWEEN 45 PSI AND YELLOW ARC. SHUT IT DOWN WHEN ITWENT BELOW THE RED LINE. REMOVED, INSPECTED AND REPLACED OIL FILTER PER MM 79-20-7, NO METAL FOUND IN FILTER, LEAK CHECKS OK. ON ENGINE RUN FOUND OIL LEAKING AT GEARBOX COVER PLATE FWD OF P AND D VALVE. 16 QUARTS OF OIL ADDED AT ARRIVAL. TIGHTENED LOOSE BOLTS AND RESAFETIED COVER PLATE. ENGINE RUN UP CHECKS AND LEAK CHECKS OK PER MM 71-00.