As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ON APPROACH INTO PBI, LGCIU #1 AND #2 FAULT MESSAGE APPEARED ON THE ECAM. AN EMERGENCY WAS DECLARED AND ACCOMPLISHED A GRAVITY GEAR EXTENSION PER ECAM PROCEDURES. THE AIRCRAFT LANDED SAFELY AT PBI WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED NOSE LANDING GEAR PROXIMITY SENSOR 30GA PER AMM 32-31-73 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK WITH NO FAULTS NOTED.