As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER THE REMOVAL OF THE SEAL ON AFT EXHAUST APU ,ENLOGATED RIVET HOLES (4EA) WERE FOUND BTW THE 6 O'CLOCK AND 12 O' CLOCK POSITION APROXIMATELLY AND AN ADITIONAL RIVET HOLE WAS FOUND AT THE 9 O' CLOCK POSITION APROXIMATELLY. ENLOGATED RIVET HOLES (4EA) WERE REPAIRED PER EA NO: 4981-2026-1120 REV - - SECTION III - PERMANENT REPAIR.