What was found
ON DESCENT PASSING APPROX 15,000FT DIRTY SOCK SMELL IN CABIN AND DETECTABLE IN COCKPIT. BELOW 10,000 FT PACK 1 AND 2 FAULT PROCEDURE CARRIED OUT AFTER PACK 2 SHUTOFF SMELL DISAPPEARED. -PERFORM TROUBLESHOOTING IAW TSM 05-50-00-810-831-A, APU CHECK AND FOUND SERVICED NORMALLY OPERATED PACK 2 WITH ENGINE 2 WITH PITOT ASSISTANCE, NO SMELLS NOTED IN CABIN. AIRCRAFT OK FOR CONTINUED SERVICE. MOC # 70473.