As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
""HIGH VIBE FAN IN FLIGHT LH ENGINE / REMOVED AND REPLACED ALL FAN BLADE PINS IAW CRJ 900 AMM 72-21-02-000-801, 72-21-02-400-801-A01-PSA. PREFORMED ENGINE VIBRATION CHECK IAW CRJ 900 AMM 71-00-00-720-806. N1 91.5 VIBE .3 / VIBRATION CHECK GOOD AT THIS TIME