What was found
STRONG DIRTY SOCK ODOR IMMEDIATELY AFTER ROTATION. TURNED PACK OFF AND THE ODOR IMMEDIATELY WENT AWAY. TROUBLESHOT IAW TSM 05-50-00-810-831-A. INSPECTED APU FOR EXTERNAL OIL LEAKS, NONE FOUND. OPS CHECKED BOTH PACKS WITH AIR SOURCE. APU, NR 1 ENG, NR 2 ENG. NO CABIN RECIRCULATION FILTERS IAW AMM 21-21-41 PB 401. PERFORMED OPS CHECK AND SYS, OK FOR SERVICE.