As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REFERENCE NON ROUTINE C050039. DURING C3 C-CHECK, INSP NOTED FLOOR BEAM Y1292 HAS CORROSION IN VARIOUS NUT CLIP HOLES FROM RT HAND FRAME 66 TO FRAME 67. SUPPLEMENTAL INFORMATION WILL BE PROVIDED AS SOON AS CORRECTIVE ACTION INFORMATION BECOMES AVAILABLE. (OPEN)