What was found
DURING TRANSIT CHECK, CAPTAIN REPORTED A FUEL LEAK AT THE MAIN LANDING GEAR WELL. DURING MAINTENANCE CHECK, A FUEL LEAK WAS DETECTED ON THE RT WING UPPER PANEL (1414C), SO PANEL WAS REMOVED DETECTING THE AUXILIARY TANK DRAIN BOOT LOOSE. BOOT WAS CORRECTLY INSTALLED AND AS A PRECAUTIONARY ACTION THE FUEL VALVE AND SEAL WERE REPLACED IAW MM 28-20-02 PAGE 201 AND 57-30-03 PAGE 201, TESTED CORRECT.