What was found
AIRFRAME VIBRATION FELT AT 170KTS AFTER TAKEOFF. VIBRATION INCREASED WITH AIR SPEED. RETURNED TO DEPARTURE. R & R THE ELEVATOR TAB CONTROL VALVE IAW MM.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRFRAME VIBRATION FELT AT 170KTS AFTER TAKEOFF. VIBRATION INCREASED WITH AIR SPEED. RETURNED TO DEPARTURE. R & R THE ELEVATOR TAB CONTROL VALVE IAW MM.