As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN FLOOR SUPPORT STRUCTURE INTERCOSTAL UPPER ATTACH ANGLE HAS CRACKS AROUND FASTENER HOLES BETWEEN BS 1320 TO BS 1340 BL 0 (VIEW FROM AFT CARGO CEILING). REMOVED CRACKED UPPER ATTACH ANGLE, LOCATED DRILLED AND INSTALLED NEW INTERCOSTAL UPPER ATTACH ANGLE BL 0 FS 1320-1340 IAW SRM 51-40-02 PAR 4 AND 51-40-05 FIG 2.