What was found
LE SLAT LIGHT (EICAS) MESSAGE ILLUMINATED. CORRECTIVE ACTION: BIT FSEU, M548 OUTBOARD SLAT PDU RVDT MISRIG MESSAGE FOUND. PERFORMED PSEU SENSOR (SLATS) CHECKS, NO FAULTS FOUND. ACCESSED OUTBD SLAT PDU RVDT CONNECTORS, CLEANED THEM, SECURED THEM. RUN SLATS UP AND DOWN, CHECKED FSEU FOR FAULTS, NO FAULTS. RUN FLAPS/SLATS SEVERAL TIMES, NO DEFECTS NOTED. VERIFY FSEU FOR FAULTS, NONE FOUND. OK FOR SERVICE (REF FIM 27-51 FAULT TREE 810).