What was found
AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED THAT AFTER TAKEOFF IN KIAH RECEIVED DOOR NOT CLOSED ECAM AND NOSE WHEEL INDICATOR LIGHT WAS RED, THE FLIGHT CREW RECYCLED LANDING GEAR HANDLE GOT 3 DOWN GREEN LIGHTS AND GEAR NOT UP LOCKED MESSAGE, RETRACTED GEAR AGAIN AND IT FUNCTIONED NORMALLY. MAINTENANCE REPLACED THE NOSE LANDING GEAR UPLOCK ASSEMBLY PER AMM 32-31-21-400-0014-A. (AALA202509037411) MAINTENANCE ALSO REPLACED LGCIU #1 (AALA202509036690) AND #2 (AALA202509036954) PER AMM 32-31-71. A SAFTISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.