As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON REMOVAL OF LEFT HAND COLLECTOR TANK WATER DRAIN VALVE NOTICED TWO WASHERS UNDER WATER DRAIN VALVE FASTENERS ON WING PLANK SIDE. UPON REMOVAL OF THE WASHERS IDENTIFIED THAT THE LEFT HAND COLLECTOR TANK WATER DRAIN VALVE FASTENER HOLES TWO EACH ARE ELONGATED. PERFORMED REPAIR ON LH COLLECTOR TANK WATER DRAIN SCREW HOLES REF REO 601R-57-21-3660 REV-. NO LEAKS NOTED.