As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT, THE CREW RECEIVED A RIGHT HAND FIRE LOOP FAIL MESSAGE. FLIGHT 2490 RETURNED TO PIT AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE FIRE DETECTION BOX IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 26-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS THEN RELEASED FOR SERVICE.