As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT DEPARTED BGR, TEMPERATURE THE PREVIOUS RIGHT AND DAY WERE CLOSE TO FREEZING. AIRCRAFT RETURNED WITH FUEL SMELL IN COCKPIT. INVESTIGATION FOUND LT FUEL CROSSFEED LINE HAD SPLIT. UPON REMOVAL OF LINE, PRESENCE OF WATER WAS FOUND. PROBABLE CAUSE WAS WATER FROZEN IN LINE. THERE ARE NO PROVISIONS OR PROCEDURES TO DRAIN THIS OR THE RT CROSSFEED LINES. (NE05200503189) (K)