What was found
20 MINS INTO FLIGHT THE NR 3 ENGINE OIL QTY DROPPED TO 17 QTS AND CONTINUED TO DROP UNTIL TOUCHDOWN AT NRT WHERE IT WAS INDICATING 1 QTS. INITIAL LOSSES AVERAGED 1 QTS EVERY 15 MINUTES. FOUND COVER PAD PLATE OF EDP DEACTIVATE KIT WAS INSTALLED BACKWARD WHEN DEACTIVATED NR 3 EDP PREVIOUSLY. INSTALLED COVER PAD PLATE CORRECTLY PER DMP 29-11-1-1 AND RAN ENG FOR LEAK CHECK. OK PFR SVC PER AMM 71-00-00.