As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEN - INFLIGHT STL-LAX. CREW REPORTED LEFT TRUST REVERSER UNLOCK INDICATION LIGHT ILLUMINATED. EMERGENCY DECLARED FLIGHT DIVERTED DEN LANDED WITHOUT INCIDENT. ADJUSTED LEFT ENGINE THRUST REVERSER UNLOCK SWITCH. SYSTEM GROUND CHECK NORMAL OPERATION.