What was found
FLIGHT 1845, PVD-PHL - ON CLIMBOUT OF PVD THE CREW RECEIVED EICAS MESSAGES "YAW DAMPER OFF","1 RADAR ALTIMETER FAILED", THEN A CONTINUOUS SOUNDING OF THE LANDING GEAR AURAL WARNING HORN. THE CREW RECYCLED THE LANDING GEAR AT 4,000FT WITH NO POSITIVE RESULTS. THE CREW ELECTED TO RETURN TO PVD AND THE FLIGHT LANDING WAS UNEVENTFUL. MAINTENANCE MEL'D THE RADAR ALTIMETER 1 AND THE FLIGHT WILL DEPART TO PHL. PERFORMED FIM TASK 21-11-00-811-88F-A, SYSTEM CHECK IS NORMAL. THE NR 1 RADAR ALTIMETER WAS REMOVED AND REPLACED AS A PRECAUTION. THE MEL WAS REMOVED.