As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-19 CHECK FOUND THE RIGHT TOP AFT SECTION OF RUDDER DELAMINATED AT RUDDER STA 238. MAINTENANCE REMOVED DELAMINATED SECTION OF RT TOP AFT RUDDER CONDUCTIVE FRAME; FABRICATED A NEW REPLACEMENT SECTION OF CONDUCTIVE FRAME PER DWG 65C25841; INSTALLED REPAIR PART IAW B737-300 51-40-04.