As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-17 CHECK EXFOLIATION CORROSION WAS FOUND ON THE UPPER SURFACE OF FLOOR SUPPORT BETWEEN BS 986.5 AND BS 1006, LBL 34. MAINTENANCE REMOVED FLOOR SUPPORT BETWEEN BS 986.5 TO BS 1006, LBL 34; FABRICATED A NEW FLOOR SUPPORT AND INSTALLED REPAIR IAW B737-300 SRM 51-40-02 PG 10-11 AND SRM 51-40-05 PG 4-5.