What was found
EXTREMELY SLOW AUTO THROTTLE RESPONSE. MODERATE TO SEVERE TURBULANCE ENCOUNTERED. ADVANCING THROTTLE RESULTED IN ACFT OVERSPEED, THEN 20 KTS LOW. AUTO THROTTLE TURNED OFF. SEVERE TURBULENCE ENCOUNTERED FOR 10 MINUTES. PERFORMED OPS CHECK OF LT FMC FOR PRESENT LEG FAULT CODE 34401 IAW MM. ACCOMPLISHED "SEVERE OR UNUSUAL TURBULENCE, EXCESSIVE MANUVER, STALL, BUFFET OR SPEEDS MORE THAN DESIRED LIMITS" CONDITIONAL INSPECTIONS IAW MM 5-51-03. NO DEFECTS.