As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE RETURNING TO ANC, UPON COMPLETION OF THE FUEL DUMP PROCEDURES, THE LEFT FUEL DUMP VALVE INDICATED A FAILURE TO CLOSE. GROUND MAINTENANCE REMOVED AND REPLACED THE GATE VALVE SHUTOFF ASSY IAW MM 28-30-02. OPERATIONAL CHECK NORMAL. (M)