As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING ANNUAL INSPECTION IT WAS NOTED THAT ON THE LT AND RT HORIZONTAL STABILIZERS, THE HOLES THAT WERE DRILLED FOR THE GAP COVER SCREW HOLES WERE DRILLED THROUGH 2 RIVETS ON THE LT AND RT STABILIZERS ON THE LOWER SURFACES ONLY. THE RIVETS ATTACH THE SKIN TO THE END RIB. REPAIRS WILL BE ACCOMPLISHED PRIOR TO THE AIRCRAFT BEING RETURNED TO SERVICE.