As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - INFLIGHT FLL-DFW. CREW REPORTED LOSS OF INSTRUMENTATION IN FLIGHT WITH LEFT IRU FAIL MESSAGE. EMERGENCY DECLARED FLIGHT DIVERTED MIA LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LEFT AIR DATA INERTIAL REFERENCE UNIT. SYSTEM GROUND CHECK NORMAL OPERATION.