As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT THE AIRCRAFT WOULD NOT PRESSURIZE. THE FLIGHT CREW RETURNED TO THE FIELD. MAINTENANCE INSPECTED AND RESEATED THE AVIONICS BAY MAINTENANCE HATCH IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 06-04-02. GROUND PRESSURIZATION CHECKS WERE COMPLETED AND THE AIRCRAFT RETURNED TO SERVICE.