As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR AFTER T/O WITH THE GEAR UP INDICATION ON EICAS THERE WAS LOUD WIND NOISE AND VIBRATION COMING FROM NOSE GEAR AREA. ALL DOORS CLOSED ON MFD. WENT AWAY AFTER 10 MINS. DURING CLIMB. HYD PUMPS AND PRESSURE WERE NORMAL AT ALL TIMES. REMOVED AND REPLACED NLG DOOR SEQUENCE PROXIMITY SENSOR IAW EMB145AMM 32-63-03. SWUNG NLG. OPS CHECK GOOD IAW EMBAMM 32-30-00.