As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"RT REV UNLOCKED" CAUTION MSG IN FLIGHT. COMPLIED WITH QRH PROCEDURE ON EMER1-16, LANDED NEAREST SUITABLE AIRPORT. TROUBLESHOT RIGHT THRUST REVERSER UNLOCK MESSAGE DURING FLIGHT IN REFERENCE TO FIM, CHECK FOR GROUND ONTHROTTLE LOCKOUT GEARBOX SOLENOID, NO DEFECTS NOTED, CHECKED RIGGING OF STOW AND THROTTLE LOCKOUT SWITCHES, NO DEFECTS NOTED. CHECKED RIGGING OF PDU AND OPERATION OF FLEXSHAFT SWITCH AND BRAKE SWITCH NO DEFECTS.