What was found
DIRTY SOCK ODOR DETECTED BY THE FLIGHT CREW AND FLIGHT ATTENDANTS. ORIGINATED IN AFT CABIN. THE ACFT WAS AT FL360. NO POWER CHANGE WAS MADE. PACK 2 WAS TURNED OFF AND THE ODOR DISAPATED, SUSPECT PACK 2 CONTAMINATION. AT TOP OF DESCENT, POWER REDUCTION, THE ODOR RETURNED WHILE USING THE NR 1 PACK. PERFORMED TSM 71-00-00-810-802-A, FOUND NO FUMES, SMOKE OR ODOR. PERFORMED A BORESCOPE OF THE STAGE 1 AND 2 BLADES (S1 AND S2). NO OIL WETTING NOTED AT THIS TIME ON THE NR 1 ENGINE IAW AMM 72-31-00-290-002.