As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DIRTY SOCK ODOR NOTICEABLE ON FLIGHT DECK. AFTER APPLYING QRH PROCEDURE WITH PACK 1 OFF ODOR DISSIPATED. NO ODOR NOTICED IN CABIN. MAINTENANCE NOTED A HYDRAULIC STREAK ON THE LOWER FUSELAGE GOING FROM THE MAIN LANDING GEAR WHEEL WELL TO THE THE APU INLET. MAINTENANCE FOUND A COUPLE HYDRAULIC FITTINGS LEAKING AND TORQUED THE B-NUTS. A SATISFACTORY LEAK CHECK WAS ACCOMPLISHED.