As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
25 MINUTES AFTER DEPARTING PIT, THE CREW RECEIVED A PROXI SYSTEM FAIL INDICATION. THE CREW CONTACTED MAINTENANCE CONTROL AND WERE ADVISED TO RETURN TO PIT. MAINTENANCE INSPECTED AND REPLACED THE PSEU UNIT IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 31-00-00.OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.