As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU AIR INLET DOOR CUTOUT-INNER STRAP FOUND CORRODED AT BS 1825, S1 - 9R AFTER APU AIR INLET HOUSING REMOVED. FOUND OUT OF LIMITS IAW SRM 53-80-15 FIG 101 DETAIL II REV 110. STRAP REMOVED & REPLACED IAW DWG 148N3105 SHT 1 REV C. REPAIR CLASSIFIED AS MAJOR.