What was found
ALL FOUR FUEL TANK QUICK DRAINS WERE FOUND LEAKING. INVESTIGATION REVEALED ALL OF THE DRAIN SEALS HAD BECOME CLOGGED WITH ALUMINUM SHAVINGS BELIEVED TO BE FROM THE TANK MANUFACTURING PROCESS. ALSO NOTED THE ALUMINUM DEBRIS HAD BEGUN TO BUILD UP IN THE MAIN FUEL STRAINER. SUBMITTER RECOMMENDS DRAIN AND FLUSH OF FUEL SYSTEM AND REVIEW OF MANUFACTURING PROCESS QUALITY CONTROL.