As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2761 - EWR - CREW REPORTED THAT AFTER ROTATION, LDG/AIR GRD FAIL MESSAGE AND REV DISAGREE MESSAGE APPEARED ON EICAS. MESSAGES CLEARED UPON GEAR EXTENSION NEAR EWR. EWR MX REMOVED AND REPLACED NLG AIR/GRD PROXIMITY SWITCH AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY. ACFT WAS APPROVED TO RETURN TO SERVICE.