As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2580 - EWR - FLIGHT CREW REPORTED NOSE LANDING GEAR MAKES LOUD THUMP DURING RETRACTION. EWR MAINTENANCE REMOVED AND REPLACED NOSE LANDING GEAR DOWNLOCK PROXIMITY SWITCH AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY. ACFT WAS APPROVED TO RETURN TO SERVICE. (S)