As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS BAY FS319.70 FRAME FROM STR 18L TO STR 21L CORRODED (C-CHECK) RO 3/4/2021 REMOVED & REPLACED MAIN AVIONICS BAY FS319.70 FRAME FROM STR 18L TO STR 21L REF CRJ900 SRM 51-42-06-001-001-A01,SRM 51-51-42-21-001-001-A01 & BOMBARDIER DWG#SH670-31810-REV AE. COMPLIED WITH 51-9001002-SKY .PRESSURE LEAK CHEAK GOOD.