As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN FLOOR STRUCTURE- FWD END OF THE SEAT TRACK AT LBL43.5, FR22 IS CORRODED. "M" SEE PIC. SUMMARY SEE NR FOR ADDITIONAL INFORMATION 001-0573:5321-2022/004 00424 CMOR REMOVED AND REPLACED PER SEAT TRACK A220 ASRP BD500- A-J51-77-00-00AAA-028A-A. (LP# 1584546; AIRCRAFT WAS GROUNDED)