What was found
AIRFRAME VIBRATION DURING CLIMB FL300 - FL360..78M. CAN DAMPEN WITH RIGHT RUDDER. REPLACED BLUE SYSTEM RUDDER SERVO. TROUBLESHOOTING ACP'D.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRFRAME VIBRATION DURING CLIMB FL300 - FL360..78M. CAN DAMPEN WITH RIGHT RUDDER. REPLACED BLUE SYSTEM RUDDER SERVO. TROUBLESHOOTING ACP'D.