As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO PHX DUE TO THE CAPTAINS NAVIGATION DISPLAY WOULD INTERMITTENTLY FAIL GOING BLANK AN OR INVALID DISPLAY UNIT MULTIPLE TIMES. THE AIRCRAFT LANDED SAFELY AT PHX. MAINTENANCE REPLACED THE NAVIGATION DISPLAY UNIT (AALA202312116397) AND THE CAPTAINS NAVIGATION DISPLAY POTENTIOMETER (AALA202312113178). A SATSIFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.