As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: FOUND CORROSION AT R1 DOOR UNDER THE AFT LOWER SILL Y-1674 FR 20. MAINTENANCE ACCOMPLISHED FINAL RESTORATION INSTRUCTIONS: REPLACED FLOOR WEB LOCATED FR20 TO FR23 AT LEVEL STRG 23 RH IAW EA 373024 AND DRAWING D53118160.