As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN HEAVY CHECK- LH SEAT TRACK INBD FLANGE HAS CORROSION ON TOP OF FLANGE AT FR 84; Y=(-10.78") REMOVED CORRODED SECTION REF ETD2020-170-005377. FABRICATED 3 EA REPAIR ANGLES REF ETD2020-170-005377. INSTALLED LH INBD SEAT TRACK REPAIR AT FRAME 84 REF ETD2020-170-005377.