What was found
INBOUND CREW REPORTING OILY/WET SOCK SMELL ON DESCENT TO SAN, APU NOT RUNNING AT TIME OF EVENT. RAN APU FOR SEVERAL MINUTES AT SEVERAL TEMP LEVELS. NO SMELL NOTED IN COCKPIT. FOUND OIL DEBRIS IN ENGINE NR2 NOSE SPINNER CONE. REMOVED SPINNER CONE COVER IAW AMM 72-11-01-000-801-A. SECTION A. (2) REPLACED FAN SHAFT COVER PACKING IAW AMM REF 72-15-00. AWAITING IDLE POWER TEST. #2 ENG FAN SHAFT COVER PACKING. COMPLETED LEVEL A DECONTAMINATION OF THE ECS REF AMM TASK 21-00-00-615-802- A, NO OIL ODOR OBSERVED DURING ENTIRE ENG RUN, #2 ENG, BLEED ON, PACKS ON- HOT-COLD, MID.