As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT REV ISLN VALVE EICAS MSG AT 10 TO 20 KTS DURING T/O MUC FWD LT T/R TO MCO/PLAC PER MEL 78-31-01. M PROCEDURE C/W, T/S PER FIM. NO TROUBLE FND. NO MSGS ON T/R RELAY MODULE. OPERATED T/R SEVERAL TIMES UNDER ENG PWR. OPS CKS NML. MCO/PLACARD REMOVED.