What was found
SLIGHT TO MODERATE SIDE TO SIDE VIBRATION FELT IN COCKPIT DURING CLIMB ABOVE FL200 AT 300 KTS. BLUE SYSTEM RUDDER SERVO REPLACED PER AMM.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
SLIGHT TO MODERATE SIDE TO SIDE VIBRATION FELT IN COCKPIT DURING CLIMB ABOVE FL200 AT 300 KTS. BLUE SYSTEM RUDDER SERVO REPLACED PER AMM.