As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POSSIBLE CORROSION AT R1 ENTRY FLOOR RBL 49.5 FR20 MINUS 2 WL 151.5. REMOVED AND REPLACED ENTRY FLOOR PANEL AT R1 FWD SERVICE DOOR PER A220 AMP BD500A-J53-00-47-12AAA-520A-A AND BD500A-J53-00-47- 12AAA-720A-A. (LP# 1664720; AIRCRAFT WAS GROUNDED)