What was found
ODOR OF ENG OIL SMOKE IN COCKPIT. RAN CHECKLISTS AND UNABLE TO DETERMINE SOURCE. DIVERTED. RELEASED FOR SERVICE IAW MEL: 36-12-01. CHECKED NR 1, 2 & 3 PACK COALESCER FILTERS. NR 1 FILTER WATER SEPARATOR HAD CONTAMINATION. OPENED NR 1 SYS DUCTS IN CAC & NR 1 PACK COMPARTMENT UNABLE TO FIND CONTAMINATION. CLEANED WATER SEPARATOR & REPLACED COALESCER BAG. REF MM 21-54-05-2 RAN NR 1 ENG & NR 3 ENG FOR THIRTY MINS. NO OIL LOSS NOTED DEFERRED NR1 PRV "MEL 36-12 -01 NR 1 PNEUMATIC PRESS. REGULATOR VALVE INOP CLOSED. OPERATE AIR SYS CONTROL PANEL IN AUTO NR 1 PNEUMATIC SUPPLY SYS - INOP" CLOSED NR 1 ENG. FOUND LT ENG THRUST REVERSER ACTUATOR LEAKING ON DUCTS. REPLACED ACTUATOR IAW MM 78-33-14-4 1. RE-ACTIVATED REG AIR VALVE AND RAN ENGINE AT HIGH PWR FOR APPROX 15 MIN. NO ODOR OF SMOKE IN COCKPIT. OK FOR SERVICE.