What was found
SHIP 3126 -DIV- TO ATL DUE TO DIRTY SOCK SMELL ON CLIMB AND INITIAL CRUISE. APU HAD BEEN OFF 20 + MINUTES AT START OF EVENT. SMELL DISAPPEARS W/ #1 PACK OFF DURING DECENT WHEN HP BLEED OPENS. SMELL QUICKLY RETURNS. ISOLATED LEFT PACK AND ODOR DISSIPATED. CORRECTIVE ACTION: T/S PER AMDS WORKCARD 0550-2002 AND AIRCRAFT SMOKE AND FUME QUESTIONNAIRE. DECISION TABLE INDICATE TYPE 2/TYPE 3 EVENT. AMDS WORKCARD 7900-2001-ENGINE OIL ODOR IN PROGRESS. WORKCARDS 7900-2001 AND 2100-2003 COMPLETE. NO ODOR NOTED IN THE CABIN. AIRCRAFT OK FOR SERVICE.