As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE PRE-FLIGHT, FUEL TANK SUMP TESTING AND WATER IN AMOUNTS OF 3 OUNCES OR MORE WOULD BE FOUND. FUEL CAP O-RINGS WERE INSPECTED AND FOUND SATISFACTORY. TOP OF FUEL CELL/ACCESS COVER WAS REMOVED ON LEFT INBOARD CELL. WATER IN THE AMOUNT OF 3 CUPS WAS FOUND TRAPPED IN WRINKLES AND AGAINST ZIPPERED IN BAFFLE JUST BELOW SWING CHECK VALVE. REMOVAL OF COVER AND SWABBING IS ONLY WAY TO REMOVE WATER.