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 43.50. REMOVED AND REPLACED SEAT TRACK AT FR 20 TO FR 30 RBL 43.50 PER A220 ASRP BD500-A-J51-42-21-00AAA-078A-A AND BOMBARDIER DWG: C02312600 REV: K. (LP# 1868113; AIRCRAFT WAS GROUNDED)