What was found
DURING APPROACH, SLECTED FLAPS 30, A T/E DISAGREE EICAS MESSAGE ILLUMINATED, DECLARED AN EMERGENCY AND RAN THE T/E DISAGREE ALT CHECKLIST. POSITIONED FLAP 30 WITH ALTERNATE FLAP SELECTOR. HAD MOMENTARY FLAP LOAD RELIEF MESSAGE. R & R OF LEFT INBD, OTBD FLAP TRANSMISSION. OPS NORMAL, NO MESSAGES ON FSEU.