As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT, THE LANDING GEAR WOULD NOT RETRACT. FLIGHT 4155 RETURNED TO THE FIELD. MAINTENANCE INSPECTED AND REPLACED THE GEAR CONTROL LEVER IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 32-31-01. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.