As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION AT REAR BARREL FLOOR EDGE SUPPORT BETWEEN FR 74 TO FR 76 LBL 49 WL147. REMOVED AND REPLACED FLOOR PANEL SUPPORT FROM FR74 TO FR76 LBL 49 WL 147 IAW A220 AMP BD500-A-J53-00-47-13AAA-720A-A. (LP# 1643683; AIRCRAFT WAS GROUNDED).