What was found
ON CLIMBOUT OF EWR, OIL (NR 1 ENG) QUANTITY BEGAN A SLOW STEADY DECREASE. AS QUANTITY APPROACHED ZERO OIL PRESSURE BEGAN DECREASING. ENGINE SHUT DOWN IN FLIGHT PER AOM. ENGINE SHUT DOWN WHEN PRESSURE WAS APPROX 35 PSI, 20 MINUTE FLIGHT WITH ENGINE WINDMILLING. REPLACED MAIN GEARBOX, FOUND OIL FILTER HOUSING FITTING STRIPPED OUT. ALL WORK C/W PER JT8D MM 72-60-00. LEAK AND OPS CHECK GOOD. LOG PAGE NR 182183.