As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 1419 - EN ROUTE CMH-DFW, RIGHT SIDE THRUST REVERSER UNLOCK LIGHT ILLUMINATED ON MFDU AT 20,000 FEET. SHUT DOWN ENGINE NR 2. LANDED SINGLE ENGINE DFW WITHOUT INCIDENT. REPLACED RIGHT SIDE LOWER THRUST REVERSER UNLOCK LIGHT SWITCH. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)