As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ON TAKEOFF NOSE LANDING GEAR DOOR NOT CLOSED ECAM MESSAGE APPEARED. FLIGHT CREW CYCLED LANDING GEAR BUT ECAM MESSAGE DID NOT GO AWAY. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO PBI WERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT. REPLACED PROXIMITY SENSORS 30GA (AALA202007159025) AND 31GA / AALA202007159026) AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK TSM 32-31-00-810-821.