As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3788 DURING DESCENT THE FIRST OFFICER REPORTED THE PEDALS FELT LOOSE AND ON FINAL APPROACH THE RUDDER PEDALS EXHIBITED A BUFFETING. THE AIRCRAFT LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE RUDDER POWER CONTROL UNIT IAW EMB 27-22-03-00-801A & EMB AMM 27-22-03-400-801A. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.