As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION FOUND ON FLOORBEAMS FRAME 24 DURING FLOORBOARD REPLACEMENT. THREE (3) EA FLOORBEAMS EXTENSIVE CORROSION. EXFOLIATION CORROSION FOUND BETWEEN FRAME 21 AND FRAME 24 ON RT SIDE FLOOR RAIL Y-765 APPROX 4 INCHES LONG BY 1 INCH WIDE. CORROSION FOUND ON RT FLOOR RAIL Y-1037 AND FR23 CORROSION IS THRU RAIL APPROX .5 INCH DIA. CORROSION FOUND ON FLOOR RAIL Y-1292 AT FR23 3 INCHES LONG BY 1 INCH WIDE. R & R FLOOR PANEL 222FF.