As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR FLT 2940 THE CREW REPORTED GLIDESLOPE ISSUES GOING INTO DTW. REPORTED A 1/2 DOT DIFFERENCE BETWEEN GLIDESLOPE INDICATIONS DURING CAT II GS COMPARATIVE. THE AIRCRAFT DIVERTED INTO CLE AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE NR 1 NAV UNIT AND OPERATIONAL CHECKS WERE GOOD.