As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - CREW REPORTED ELECTRIC STAB TRIM, FIRST OFFICERS RADIO ALTIMETER AND MACH TRIM ALL FAILED. EMERGENCY DECLARED, RETURNED MIA LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED STAB TRIM ACTUATOR. SYSTEM GROUND CHECKED NORMAL OPERATION.