As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L ENGINE IN FLIGHT GOES TO GROUND IDLE, INSTEAD OF STAYING IN FLIGHT IDLE. EICAS MESSAGE IDLE DISAGREE.(<P>PERFORMED FIM TASK TREE 71-05 FAULT TREE 846. RAN ENGINE BOTH ENGINES AND NO FAULTS NOTED AT THIS TIME. OPS CHECK NORMAL. NO FLIGHT IDLE IDLE MESSAGE AT THIS TIME. ENG RUN AMM REF 71-00-00.</P>)