What was found
FLIGHT ATTENDANT REPORTED A LOUD VIBRATION FROM THE LAVATORYS UP TO ROW 11 ON TAKE OFF AND AT CRUISE. MAINTENANCE PERFORMED, VIBRATION CHECK ALL WITHIN LIMITS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLIGHT ATTENDANT REPORTED A LOUD VIBRATION FROM THE LAVATORYS UP TO ROW 11 ON TAKE OFF AND AT CRUISE. MAINTENANCE PERFORMED, VIBRATION CHECK ALL WITHIN LIMITS.