As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN ENGAGED AUTOTHROTTLE SPLIT DEVELOPS (LEFT THROTTLE STAYS CONSTANT AND RIGHT THROTTLE INCREASES) AND SYSTEM KICKS OFF. NO OTHER LIGHTS OTHER THAN A/T P/RST WARNING LIGHT. ACCOMPLISHED FIM TASK 22 31 00 810 812. A/T CURRENT STATUS AND INTERACTIVE BITE TEST ARE NORMAL WITHOUT FAULT MESSAGES. DFCS BITE TEST GRP 43 LRU REPLACEMENT TEST FOR A/T IS GOOD.