As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU INLET AREA AT BS 1825 BETWEEN STR 4 - 7 RT THE NUTPLATE ATTACH STRAP IS CORRODED. CORRODED NUTPLATE ATTACHMENT STRAP REMOVED. NUTPLATE STRAP FABRICATED IAW DWG 148N3138 SHT 1, REV C AND INSTALLED IAW DWG 148N3105 SHT 1. REV C. REPAIR IS CLASSIFIED AS MAJOR.