As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LEFT PROPELLER FAILED TO UNFEATHER WHEN SELECTED, DURING THE PUSHBACK FOR DEPARTURE. THE AIRCRAFT WAS RETURNED TO THE GATE. MAINTENANCE INSPECTED AND REPLACED THE LEFT PROPELLER CONTROL UNIT, IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 61-21-06. OPERATIONAL CHECKS WERE COMPLETED, AND THE AIRCRAFT WAS RETURNED TO SERVICE.