What was found
UPON GEAR EXTENSION, CREW RECEIVED ECAM MESSAGE LGCIU 1 FAULT AND LGCIU 2 FAULT. CREW DECLARED AN EMERGENCY. FOLLOWED ECAM AND COM PROCEDURES. GRAVITY EXTENDED LANDING GEAR AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED BOTH NOSE LANDING GEAR DOOR CLOSED SENSORS (30GA AND 31GA), OPERATIONAL CHECK OK.