As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF LEFT MAIN GEAR AND ALL GEAR DOORS WOULD NOT RETRACT. RE-CYCLED PER ECAM PROCEDURE AND EVENTUALLY GEAR DOORS RETRACTED. AIRCRAFT WAS GROUNDED. THE LANDING GEAR CIU NR 2 SHOWED A MALFUNCTION. REPEAT EVENT FROM 1-17-2017. MAINTENANCE FOUND LEFT MAIN LANDING GEAR ACTUATOR AT FAULT. REPLACED THE ACTUATOR IAW AMM 32-31-46-400-801.