What was found
CABIN BS 1320 TO 1340, LBL 64 TO LBL 70 HAS CORROSION UNDERSIDE OF CREASE BEAM WEB. REMOVED AND REPLACED WITH NEW CREASE BEAM WEB FABRICATED AND INSTALLED IAW DWG 146N8322 SHT.1. REV.F. REPAIR IS MAJOR.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
CABIN BS 1320 TO 1340, LBL 64 TO LBL 70 HAS CORROSION UNDERSIDE OF CREASE BEAM WEB. REMOVED AND REPLACED WITH NEW CREASE BEAM WEB FABRICATED AND INSTALLED IAW DWG 146N8322 SHT.1. REV.F. REPAIR IS MAJOR.