As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOTHROTTLE WILL NOT REMAIN ENGAGED. ACFT GROUNDED. AUTOTHROTTLE BITE IAW FIM 22-31 TASK 801 SHOWED MULTIPLE OCCURRENCES OF FAULT 22-31687 "RATE MONITOR" FOR ASM-1. ACCOMPLISHED TROUBLESHOOTING FOR FAULT 22-31687 IAW FIM 22-32 TASK 819. INITIAL EVALUATION, SYSTEM RESET AND TEST DID NOT CONFIRM FAULT. PERFORMED AUTOTHROTTLE SYSTEM OPERATIONAL TEST IAW AMM 22-31-00-710-801, OPS NORMAL.