As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EVENT SUMMARY STATED THRUST REVERSER UNLOCK MESSAGE IN FLIGHT. OPENED DM 3114105-1 MEL 78-30-01 CAT B. RIGHT THRUST REVERSER UNLOCK MESSAGE ON ROTATION, (M) PROCEDURES C/W, ITEM PLACARD AND TRANSFERRED TO SUMMARY OF DEF ITEMS. REMOVED AND REINSTALLED RT ENGINE COWLS REF AMM 71-10-00.