As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO WASTE TANK AT APPROX STA 2000 & LBL 46 LWR INTERIOR SURFACE SKIN AREA EXFOLIATED. REPAIRED PER EA 1-5330-T0354479 TITLED: FUSELAGE - PLATES AND SKINS - AFT BODY KEEL PLANK P/N AJC 7164-503 - CORROSION BETWEEN BS 1997 AND BS 2005 AND BETWEEN L-44L AND L-45L.