What was found
ETOPS SIGNIFICANT SYSTEM - MOVING FLAPS FROM 20 TO 30 -TRAILING EDGE- FLAP LIGHT CAME ON ALONG WITH EICAS MESSAGE -T/E FLAPS DISAGREE- FLAPS WOULD NOT RETRACT FROM 20. BITE CHECKED FSEU PER FIM 27-51-00 FOUND FAULT CODE 19548, FOUND CONNECTOR FOR PDUM548 LOOSE. RESECURED CONNECTOR AND OPERATED SLATS/FLAPS SEVERAL TIMES, NO DEFECTS NOTED. NO FAULTS ON FSEU, OK FOR SVC (TECH SERVICE NOTIFIED, NO HISTORY).