As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON SKIN STRAP AT BS 1790, BETWEEN STR 3-6R. APU INLET FWD SIDE SKIN STRAP CORROSION VISUALLY FOUND THAT EXCEEDED LIMIT IAW SRM 51-10-*02, REV 109, CORRODED STRAP. R & R WITH NEW STRAP. REPAIR CLASSIFIED AS MAJOR IAW GMM 6-2-100.