As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION FOUND ON SEAT TRACK FORWARD OF FRAME 22 APPROXIMATELY 3 INCHES AT RBL 23.00. REMOVED AND REPLACED SEAT TRACK RBL 23 FR20-FR30 IAW A220 ASRP BD500-A-J51-42-20-00AAA-078A-A AN BOMBARDIER DWG# PL C02312600 REV-K. (LP# 1849440; AIRCRAFT WAS GROUNDED)