What was found
UPON ARRIVING TO CRUISE FLIGHT A LOW FREQUENCY VIBRATION BEGAN AND LASTED APPROX 20 MINUTES AND THEN DISAPPEARED FOR THE REMAINDER OF THE FLIGHT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
UPON ARRIVING TO CRUISE FLIGHT A LOW FREQUENCY VIBRATION BEGAN AND LASTED APPROX 20 MINUTES AND THEN DISAPPEARED FOR THE REMAINDER OF THE FLIGHT.