As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON EXTENSION FLAP HANDLE MAKES A NOISE & VIBRATION AS IT APPROACHES EACH SELECTED FLAP SETTING. FLAPS HAS A VIBRATION PRIOR TO REACHING A SELECTED POSITION, NO NOISE IN ALTERNATE. PROBLEM ISOLATED TO HYD MOTOR. REPLACED HYDR MOTOR. OPS CKS NORMAL.