As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO THROTTLE WILL NOT STAY CONNECTED. AUTO THROTTLE CHECKED OK. ACFT GROUNDED. AUTO THROTTLE IN FLT REVIEW SHOWED NUMEROUS ASM-2 RATE MONITOR FAULTS. IAW AMM 22-31-91, REMOVED & REPLACED ASM-2 . OPS CHECKED NORMAL IAW AMM. AUTO THROTTLE CURRENT STATUS AND AUTO THROTTLE SERVO MOTOR TEST.