As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FS280 FLOOR SUPPORT FOR 221ALF IS CORRODED. REMOVED & DRILLED UP NEW FLOOR SUPPORT ANGLE IAW SRM 51-42-06-001-001, 51-42-21-001-001, & 51-40-1-001-001. INSTALLED AFT COCKPIT FLOOR SUPPORT ANGLE AT FS280 IAW SRM 51-42-06-001-004-A01. REPAIR CLASSIFIED AS MAJOR.