As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX/YUM - FLT 6389- THE AIRCRAFT IN CRUISE WHEN THE CABIN DOOR ANNUNCIATOR ILLUMINATED. THE CREW DECLARED AN EMERGENCY AND LANDED IN YUM WITHOUT FURTHER INCIDENT. MAINTENANCE ACTION WAS DEFERRED PER MEL 52-1. THE AIRCRAFT WAS RETURNED TO SERVICE. (X)