As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN HEAVY CHECK- CF 3 CABIN FLOOR STRUCTURE RH INBD LONGITUDINAL SEAT TRACK HAS CORROSION AT FR82. CUT AND REMOVED SECTION OF FLOOR BEAM DUE TO CORROSION OUT OF LIMITS REF. SRM 53-23-10/AD01. INSTALLED NEW R/H I/B SEAT TRACK FROM BETWEEN FRAME 81-82 TO FRAME 84 PER REF ETD2020-170-005453.