As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB OUT, THE SYSTEM PAGE SHOWED THAT THE RIGHT HAND DE-ICE BOOT WAS FAILING. THE FIRST OFFICER LOOKED AND SEEN SOME OF THE BOOT WAS MISSING. THE WEATHER WAS ICING SO THE CREW DECLARED AN EMERGENCY AND RETURNED TO DAY. MAINTENANCE INSPECTED AND REPLACED THE LEADING EDGE IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 57-40-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.