As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A RUMBLE SOUND WHEN CHANGING TEMPERATURES IN THE COCKPIT. ON INVESTIGATION, THE CONDITIONED AIR HOSE THAT RUNS UNDER THE PILOTS FLOOR NEXT TO THE ELEVATOR CONTROL ROD AND BELLCRANK RUPTURED. THE PLASTIC WINDING THAT HOLDS THE HOSE SHAPE UNRAVELED AND COULD HAVE POSSIBLE RESTRICTED THE MOVEMENT OF THE ELEVATORS.