What was found
FLIGHT CREW REPORTED A DIRTY SOCK ODOR IN THE COCKPIT, FIRST CLASS & OVERWING AREAS OF THE AIRCRAFT WHILE WAITING FOR DEPARTURE AT THE GATE. MAINTENANCE FOUND EVIDENCE OF OIL LEAKING FROM THE APU TURBINE BEARING CAVITY AND REPLACED THE DEFECTTIVE O-RINGS PER AMM 49-10-00. THE APU COMPARTMENT WAS WASHED PER AMM 49-00-00-100-001-A AND A SATISFACTORY LEAK AND OPERATIONAL CHECK WAS ACCOMPLISHED PER TASK CARD 26L00021004 WITH NO ODOR PRESENT.