As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON ARRIVAL ACCOMPLISHED TAP TEST ON ENG NR 1 & FOUND THAT BLADE NR 21 FAILS TAP TEST READ OUT ARE 1867 DB PER SEC. REPLACED FAN BLADE IAW AMM. RAN BOTH ENGINES UP AS PER VIBRATION SURVEY INSTRUCTIONS. N 1 & N 2 VIBRATION OF ENG NR 1 ARE WITHIN LIMITS.