What was found
DURING CLIMB OPERATION, THE NR 2 ENGINE LOW OIL PSI LIGHT ILLUMINATED AND OIL QUANTITY WENT TO EMPTY. THE NR 2 ENG WAS SHUTDOWN, AN EMERGENCY WAS DECLARED AND THE AC LANDED WITHOUT INCIDENT. POST FLIGHT INSP REVEALED THAT THE NR 2 ENGINE OIL FILTER BYPASS SWITCH GEARBOX FITTING WAS AT FAULT. REPAIRED GEARBOX INSERT, OPS AND LEAK CHECKS GOOD. NO OTHER DEFECTS WERE NOTED. AC WAS RETURNED TO SERVICE. (K)