As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXCESSIVE VIBRATION IN FLIGHT DURING ALL PHASES OF OPERATIONS WITH FLAPS SET AT ZERO. ONCE FLAPPS ARE MOVED ALL VIBRATION DISAPPEAS. VIBRATIONS FELT THROUGHT FLIGHT DECK AND GALLEY. VIBRATION IS ACCOMPANIED BY LOW RUMBLING SOUND. FOUND THE LT DIP STICK PANEL DOOR TO BE LOOSE.