As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 2868 - EWR - CREW REPORTED A LOUD NOISE FROM NOSE WHEEL AREA AFTER LANDING GEAR EXTENSION. NORMAL DOWN AND LOCKED INDICATION. NO MESSAGES ON EICAS. ALTHOUGH ALL INDICATIONS WERE NORMAL, CREW PROCEEDED WITH EMERGENCY DESCENT. ACFT LANDED UNEVENTFULLY. EWR MX REMOVED AND REPLACED DOWNLOCK PROXIMITY SWITCH AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY. ACFT WAS APPROVED TO RETURN TO SERVICE.