As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN FS 408 LONGERON 2L HAS CHAFE. CHAFE FOUND TO BE A CRACK. FABRICATED AND INSTALLED LONGERON 18.6 X 2.1 INCHES FROM S2777922-1-26500 AND SPLICE 15.0 X 2.5 INCHES FROM 7637813-3 IAW DC-9/MD-80 SRM 53-02D FIG 18, 51-10-3D AND M/M 25-00-00-801.