As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUSELAGE UNDER WING TO BODY FAIRINGS, A/C BAY AND KEEL BEAM. CORROSION WAS FOUND ON THE KEELBEAM FROM B.S. 1000 TO 1760. CORROSION WAS ALSO FOUND ON FITTINGS AND WEBS FOR THE KEELBEAM. THE KEELBEAM BOX LOWER CHORD LT AND RT AT BS 1265 TO 1480 AT LBL 9 AND RBL 9, WL 85 TO WL 93. ENGINEERING CHANGE/REPAIR AUTHORIZATION (ECRA) REPAIRED PER ECRA 787RR-53-747-51.