As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACFT IN HEAVY CHECK MAINT FOUND CORROSION ON RT OUTBD PAX SEAT TRACK FRAME 74-84. REMOVED, FABRICATED AND INSTALLED NEW SEAT TRACK AT FR 74-84 REF SRM 51-40-08 AND ETD2018-170-129236. RESTORED SURFACE PROTECTION REF SRM 51-23-06. ACFT REMAINS IN HEAVY CHECK UNTIL COMPLETION.