As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING INTERNAL STRUCTURAL INSPECTION OF THE TAIL AREA, A 5/8 INCH CRACK WAS FOUND ON THE RUDDER CONTROL CROSS BEAM SUPPORT (EMPENNAGE).THE PROBABLE CAUSE MAY BE THAT ON THE LOWER LT OUTBOARD RIVETS WITH BELLOW MINIMUM EDGE DISTANCE. IN ADDITION, THE RIVET HEAD ARE IN THE RADIUS OF THE INSTALLATION.