As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON INSPECTION, MECHANICS NOTICED FUEL DRIPPING FROM AREA ON LOWER RIGHT-HAND WING NOT IN VICINITY OF SUMP DRAIN. A CHECK WAS MADE TO VERIFY SECURITY OF ALL TANK CONNECTIONS. CONNECTIONS ALL OK. REPLACED CELL WITH SERVICEABLE CELL. MECHANICS INDICATED UPON REMOVAL OF FUEL CELL, NUMEROUS DRILL OUT RIVET BUCKED HEAD WITH SHARP POINTS. THIS MAY HAVE CONTRIBUTED TO THE LEAK.