As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNDER FLOOR AT STR21L IN BETWEEN FS 333. TO FS 349.0 INTERCOSTAL HAS CORROSION. (C CHECK RO 12-31-21) REPLACED UNDERFLOOR AT STR 21L INTERCOSTAL (BACK-UP SILL) REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH670-31810 REV.AE. COMPLIED WITH 51-900-1002-SKY.