As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BULKHEAD BS 1088 OPENING FOR APU INLET UPPER MATING FLANGE IS CORRODED. ACFT GROUNDED. REMOVED CORROSION AND FOUND TO BE OUT OF LIMITS IAW SRM 53-80-08-1A1, REMOVED FLANGE, FABRICATED A NEW FLANGE AND INSTALLED IAW SRM 51-40-02-0G-0 AND SRM 51-40-05-0G-0.