As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE CHECK FOUND CORROSION ON CROSSBEAM AT FR 84 BETWEEN LT AND RT SEAT TRACK. PERFORMED PERMANENT REPAIR CUTOUT AND L ANGLE FABRICATION ON CROSSBEAM AT FR 84 BETWEEN LT AND RT SEAT TRACK, REF ETD2020-170-029876 AND EMB SRM 53-00-10, 51-40-08. A/C REMAINS IN HEAVY CHECK UNTIL COMPLETION.