What was found
(CAN) ON CLIMB OUT FAN 1 VIBRATIONS REACHED 4.0. RETURN TO FIELD. CORRECTIVE ACTION: REMOVED AND REPLACED THE FAN BLADE PINS ON THE #1 ENGINE AND ENSURED THAT FAN DISK AND FAN BLADE BORES ARE FREE OF DEBRIS. (TC# 20191003003)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) ON CLIMB OUT FAN 1 VIBRATIONS REACHED 4.0. RETURN TO FIELD. CORRECTIVE ACTION: REMOVED AND REPLACED THE FAN BLADE PINS ON THE #1 ENGINE AND ENSURED THAT FAN DISK AND FAN BLADE BORES ARE FREE OF DEBRIS. (TC# 20191003003)