As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOTHROTTLE DISENGAGED AT CRUISE ALTITUDE. MUTIPLE ATTEMPTS TO RE-ENGAGE AUTOTHROTTLE RESULTED IN DIS-ENGAGEMENTS EACH TIME AFTER 10 SECS. AUTOTHROTTLE NEVER RE-ENGAGED PROPERLY FOR REST OF FLIGHT. A/T FFR SHOWS 4 FAULTS ON FLT LEG 7-22-31687 ASM 1 RATE MONITOR FAULT. PERFORMED FIM 22-31-00-810-805 CURRENT & SERVO MOTOR TEST PASSED. NO OTHER FAULT RECORDED IN FFR & NO HISTORY PAST 60 DAYS.