What was found
(AIRCRAFT GROUNDED) FOR FINAL 25 MINUTES OF FLIGHT DIRTY SOCK SMELL IN AFT GALLEY. IN COCKPIT MUSTY SMELL OCCURRED / PEFORMED TC 21-000-002. FOUND OIL LEAK FROM FCU. REMOVED AND REPLACED FCU AND LUBE MODULE, IAW AMM 49-32-11-400-003-A, AND 49-91-45-400-003-A. NO LEAKS NOTED AT THIS TIME. DIRTY SOCK SMELL NOT REPRODUCED. THIS CLEARS MDDR 211832. INOP PLACARDS REMOVED. TC 21-000-003 COMPLETE M313 NEEDS CREATED FOR 05-000-011 WITHIN 5-15 CYCLES. (RESOLVED ON W/O: 520991 TASKCARD: NR-00001 ) TC 05-000-011 COMPLIED WITH, NO DEFECTS NOTED.