As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON UPPER FLANGE OF CROSSBEAM BETWEEN FRAME 11 AND 12 AS SEEN UNDER COCKPIT FLOOR 221ELF AND 221DLF. BLENDED OUT CORROSION AND INSTALLED REPAIR ANGLES ON UPPER FLANGE OF CROSSBEAM BETWEEN FR 11 AND 12 REF ETD2019-170-118438. SEE W/O H6951 SN 614 FOR WORK DETAILS. AIRCRAFT REMAINS IN HEAVY CHECK BNA.