As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT # 984, RDU-BOS. AT 500' AGL ON ILS 22L IN KBOS RADAR ALTIMETERS STARTED DISAGREEING SIDE TO SIDE AND CAUSED ON RA FLAG ON PFD. EICAS MESSAGE TAIL STRIKE AVOIDANCE WAS PRESENT DURING THIS TIME AND ALL MESSAGES CLEARED BY 200' AGL; COMPLIED WITH INFO NOTICE 2022-T001, NO DEFECTS NOTED. OK FOR SERVICE SUSPECT 5G INTERFERENCE. MCC CHARLIE NOTIFIED.