What was found
(AIRCRAFT NOT GROUNDED) IN CRUISE FLIGHT AFT FA'S REPORTED A STRONG DIRTY SOCK SMELL ROW 30 AND AFT. WE FOLLOWED QRH PROCUDURE. TURNED OFF PACK #2, SMELL SLOWLY DISIPATED. WE CONTINUED TO OUR DESTINATION PACK #2 REMAINED OFF FOR THE DURATION OF THE FLIGHT, FA'S REPORT IN THE DECENT THAT THE ODOR WAS VERY STRONG. / REF LP 2028284 ODOR EVENT REQUIRES M313 FOR LVL 2 TASK CARD. C/W TC 21-000-002, NO LEAKS FOUND, NO SMELLS REPRODUCED. DURING TC 21-000-003 #2 ENGINE PRECOOLER FOUND LEAKING. REMOVED AND REPLACED #2 ENGINE PRECOOLER (7150HM) REF AMM:36-11-42-000-001-A AND AMM:36-11-42-400-001-A. LEAK CHECK GOOD.