As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT, THE CREW RECEIVED A PACK OVERPRESSURE INDICATION AND RETURNED TO PIT. MAINTENANCE INSPECTED AND REPLACED THE RESTRICTOR FOR THE RIGHT HAND OVERPRESSURE SWITCH IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 36-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.