As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATB/MIA - LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF MIA. RECYCLED ACCORDING TO PROCEDURES, STILL WOULD NOT RETRACT. REPLACED NOSE LANDING RETRACT ACTUATOR IAW MM 32-20-00. ACCOMPLISHED RETRACTION PER MM 32-00-501 (TASK). FOUND ALL NORMAL. RETURNED AIRCRAFT TO SERVICE. (X)