What was found
DURING DAILY CHECK, FUEL SEEPING TRACE WAS FOUND ON LT FUEL TANK ACCESS PANEL 532LB. THE ACCESS PANEL WAS REMOVED AND A CRACKED DOME WAS FOUND. MFG HAS FOUND THAT A BUILD-UP OF MOISTURE IN THE PANEL DOME CAN CAUSE A CRACK AFTER GOING THROUGH MUTIPLE FREEZE AND THAW CYCLES THAT OCCUR DURING FLIGHT. SINCE 2009, THIS CARRIER HAS PERFORMED FLEETWIDE INSP OF FUEL TANK ACCESS PANEL AND REPLACEMENT WITH NEW GASKET AND RUBBER SEAL ON THE ACCESS PANEL. HOWEVER, THE SITUATION KEEPS OCCURING. (B-18608).