As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT, THE LEFT HAND INBOARD DE-ICE BOOT FAILED AND FLIGHT 4075 RETURNED TO PIT. MAINTENANCE INSPECTED AND REPLACED THE LEADING EDGE ASSEMBLY IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 30-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.