What was found
F/A REPORTED FUMES IN CABIN WHICH SMELLED OF DIRTY SOCKS AFTER TAKEOFF. PERFORMED OD 16-31 WHICH LEAD US TO TURN OFF PACK 2 + CROSS BLEED TO SHUT. ODOR DISSIPATED, IN CRUISE. HOWEVER, IT RETURNED ON APPROACH. T/S COMPLIED WITH IAW TSM 05-50-00-810-831-A. ISOLATED CABIN ODOR COMING FROM ENGINE 2. PACKS 1 + 2 OPERATED WITH ENGINE AND APU BLEED NO FAULTS NOTED IAW AMM 12-33-21-618-001-A02. PERFORMED T/S IAW TSM 71-00-00-810-801-A, NO HIGH OIL CONSUMPTION OR LEAKS NOTED. PACK BURN OUT PROCEDURES ACCOMPLISHED IAW 21-00-00-615-004-A AND NO FUMES LONGER PRESENT WHILE OPERATING ENGINE 2 WITH BOTH PACKS.