As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: APU AIR INLET DOOR ASSEMBLY HAS AREAS OF MISSING PAINT AND SURFACE CORROSION ON THE INSIDE OF THE DUCT. REMOVED OLD APU AIR INLET ASSEMBLY AND INSTALLED SERVICEABLE APU AIR INLET DOOR ASSEMBLY. PER 49-15-22 OPS CHECKS GOOD.