As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR - FLT 3984 - CREW REPORTED NR 1 ENGINE SHUTDOWN UPON LANDING GOING INTO REVERSE. MAINTENANCE FOUND NR 1 ENGINE HP VIBRATION TO BE OFF THE SCALE, BOROSCOPED 9TH STAGE COMPRESSOR AND FOUND DAMGE WITH METAL IN INNER BYPASS DUCT. REMOVED AND REPLACED THE ENGINE PERFORMED OPS CHECKS, ALL CHECKED GOOD. RETURNED AIRCRAFT TO SERVICE. (M)