What was found
FLT 1042,MCO-ROC. SA NOTICED STRONG FUMES DIRTY SOCK ODOR DURING CLIMB MID CABIN. SA SMELLED DIRTY SOCK ODOR ON DESCENT. ACFT TO BE REPOSITIONED TO JFK FOR FURTHER T/S. MX-4 UPDATED, PLACARD INSTALLED. PERFORMED LEVEL B REMOVAL OF CONTAMINATION OF THE ENVIRONMENTAL CONTROL SYSTEM, LEAK AND OPS TEST GOOD, MX-4 UPDATED PLACARD REMOVED MCC NOTIFIED IAW AMM 21-00-00-615-803-A. REPLACED BOTH LT AND RT RECIRC FILTERS AS PERCAUTION TO ODOR, IAW AMM 21-21-41.