As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
***CORROSION*** ON FWD BULKHEAD AT APU COMPARTMENT JUST UNDER FUEL SUPPLY LINE BS1088 LBL14 WL215. MARKED. / CORROSION ON FWD BULKHEAD AT APU COMPARTMENT AT BS 1088 LBL 14 WL 215 WAS REPAIRED IAW ATS ER 19-04139 REV IR DATED 29JUL19 AND EA 1-753-35316 REV IR