What was found
DURING CLIMBOUT, NOTED PRESSURIZATION LEAKAGE AT FORWARD ENTRY DOOR, LOWER HINGE SEAL. UNABLE TO MAINTAIN PRESSURE. AIRCRAFT RETURNED TO SJC AND MADE AN UNEVENTFUL LANDING. FOUND LOWER HINGE SEAL NOT SEATING PROPERLY. REPOSITIONED SEAL PER BOEING M/M, NO HELP. REPLACED UPPER AND LOWER HINGE SEAL COVERS.