As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CBN/ U/D/ STA 540 RT FRAME FOUND WITH SURFACE CORROSION. SURFACE CORROSION REMOVED AND REPROTECTED PER SRM 51-10-01 AND SRM 51-10-02 REV 117. ORIG THICKNESS: 0.180 INCH; REMOVED: 0.177 INCH; FOUND WITHIN LIMITS AS PER B747-200 SRM 53-10-01 FIGURE 1, REV 117. REWORKED AREA PAINTED PER SRM 51-10-02 REV 117.