As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUE TO REPEAT AIRFRAME VIBRATION, FOUND VIBRATION COMING FROM ADP HYD PUMP AND ADP PRSOV. ADP HYD PUMP REMOVED PER AMM. ADP HYD PUMP INSTALLED PER AMM. OPS CHECKED NORMAL & NO VIBRATION. ADP PRSOV CHANGED PER AMM 29-11-30. VALVE OPS CHECKED NORMAL.