As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON AFT FUSELAGE RT LOWER WASTE VACUUM EXHAUST PLUG REMOVED AT STA 1959 BETWEEN LONGERON 39R TO 40R, FOUND EXISTING DOUBLER CORRODED. AFT FUSELAGE RT LOWER, AT STA 1959 BETWEEN LONGERON 39R TO 40R REPAIR CARRIED OUT AS PER SRM 53-20-00 VOL 1 FIG 2. REPAIR CLASSIFIED AS MAJOR AS PER FEDEX GMM 6-2-100.