As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION IN THE UPPER SKIN (CEILING) AND STRINGERS AND ANGLE BETWEEN FRONT SPAR TO STR 28C IN DRY BAY (INTERNAL) CENTER-SECTION. REMOVED CORROSION FROM UPPER SKIN PER BOEING SRM 51-10-01 WITHIN LIMITS PER SRM 53-10-01. TREATED PER 51-10-02.