As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AN H CHECK IN ATLANTA, CORROSION WAS FOUND ON THE HORIZONTAL FLANGE OF THE FUSELAGE CUSP ANGLE AT STATION 120 (RT). DUE TO DEPTH OF CORROSION, IT WAS ELECTED TO TRIM THE FLANGE TO REMOVE THE DAMAGED AREA AND REPAIR ACCOMPLISHED PER EA 99-181362 LOG PAGE 1640717. TE 9910078-3 SUBFLOOR DIAPHRAGM WAS TRIMMED AT A SINGLE ATTACHMENT LOCATION TO REMOVE A CRACK.