As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - FLT 5339 - CREW REPORTED AFTER TAKEOFF, THE LANDING GEAR WOULD NOT FULLY RETRACT. CREW ALSO REPORTED A THUMPING NOISE AND RECEIVED A LEFT MLG UNLOCK LIGHT. CREW RETURNED TO MIA AND LANDED SAFELY. MAINTENANCE REMOVED AND REPLACED THE GREEN SYSTEM HYDRAULIC PUMP IAW ATR MM. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)