As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DAL - FLT 4162 - THE CREW REPORTED THE RIGHT MLG WOULD NOT RETRACT AFTER TAKEOFF. THE AIRCRAFT RETURNED TO DAL, WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE RESECURED THE DOWNLOCK CANNON PLUG AND OPERATIONALLY CHECKED GOOD, AND THE AIRCRAFT WA APPROVED FOR RETURN TO SERVICE. (M)