As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT FUSELAGE WASTE TANK COMPARTMENT AT STA 1997 & LBL 51 TO RBL 51. WEB TO LONGERON ATTACHMENT EXFOLIATED (MARKED), BLENDED CORROSION AREA FOUND TO BE BEYOND LIMITS. FABRICATED REPAIR ANGLE REF SRM 53-30-00 FIG. 8 AND DWG AGA3784 AND INSTALLED REF SRM 51-31-01 VOL. 2.