As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS BAY STR 21R CORRODED BETWEEN FS349.00 AND FS364.00 (C-CHECK RO 4/25/2022) REMOVED AND INSTALLED STINGER 21R FROM FS333.00 TO FS 379.00 REF. CRJ900 SRM 51-42-06-001-001-A01 AND DWG SH690-31350 REV-M. COMPLIED WITH TASK CARD 51-900-1002-SKY. LEAK CHECK GOOD. SEE CONTINUE CARD FOR DETAILS.