What was found
LOG PAGE: F35815. JFK - 3 HOURS OUT OF EINN, NR 3 ENGINE OIL QUANTITY STARTED TO DECREASE FROM ONE-HALF TO 'E'. NR 3 OIL PRESSURE STARTED DROPPING INTO CAUTION RANGE, THE LOW OIL PRESSURE LIGHT ILLUMINATED. ENGINE WAS SHUT DOWN. N1 IND. 30.4 PERCENT AND N2 26.7 PERCENT AT PRESSURE ALT OF 260,000 FEET. OIL PRESSURE INDICATED 21 PSI FOR 3.5 HOURS OF WINDMILLING IN-FLIGHT. PERFORMED WINDMILLING AND CHIP DETECTOR CHECKS WITH NO DEFECTS NOTED. OIL LEAK WAS FOUND AT ANGLE DRIVE GEARBOX COVER PLATE. FOUND A HEILCOIL PULLED LOOSE FROM COVER AND REPAIRED PER ECRA 66-2479-72-015-1. (X)