As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2400 - EWR - CREW REPORTED NOSE LANDING GEAR MADE CONTINUOUS BANGING SOUND AFTER RETRACTION. CREW DIVERTED FLIGHT TO EWR AND LANDED AIRCRAFT UNEVENTFULLY. EWR MX REMOVED AND REPLACED LEFT MAIN GEAR UPLOCK BOX AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY. AIRCRAFT WAS APPROVED TO RETURN TO SERVICE.