As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RBL9, FLOOR SEAT RAIL SEGMENT BETWEEN FS 400 TO FS 409+128 IS CORRODED OUT OF LIMITS. EVALUATED RBL9, FLOOR SEAT RAIL FS 400-FS 409+128 FOUND TO BE OUT OF LIMITS IAW SRM 53-21-49. REMOVE SEAT RAIL. REMOVED RBL9, SEAT RAIL FS 400-FS 409+128 IAW AMM 53-01-11-000-802. FABRICATED SEAT RAILS IAW GREO 601R-53-00-485, REV A. INSTALLED SEAT RAIL FROM FS 400 TO FS 409+128 AT RBL9 IAW AMM 53-01-11-400-802.