As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RDD - CREW RETURNED TO FIELD WHEN AFTER TAKEOFF THE GEAR WOULD NOT RETRACT. MAINTENANCE INSPECTED THE AIRCRAFT AND REPLACED THE NUMBER 2 WEIGHT ON WHEELS HARNESS. OPERATIONAL CHECKS WERE PERFORMED AND CHECKED GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.