What was found
EN ROUTE FROM SEA TO ANC, THE FLT CREW NOTICED A DECLINE IN THE MAIN HYD SYS QUANTITY. THE FLT CREW NOTICED WHILE FOLLOWING COMPANY PROCEDURES THE HORIZONTAL STABILIZER ALTERNATE TRIM INOPERATIVE. THE FLT CONTINUED TO ANC FOR AN UNEVENTFUL LANDING. MX INSPECTED THE ACFT WHICH REVEALED THE STANDBY RUDDER PUMP LEAKING. MX REPLACED THE STANDBY RUDDER PUMP IN ACCORDANCE WITH THE MM. MX FOUND THE ALTERNATE STABILIZER ELECTRICAL TRIM MOTOR ELECTRICAL CONNECTOR CONTAMINATED WITH MOISTURE. MX CLEANED THE ELECTRICAL CONNECTOR AND PERFORMED A SUCCESSFUL OPS CHECK. THE ACFT WAS RETURNED TO SERVICE.