As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER REMOVE OF EXTERNAL SERVICE PANEL (PL101), CRACK ON LOWER SUPPORT BRACKET WAS FOUND LOCATED BTW FS193.00/FS202.75 AND BTW STGR19R/21R. LOWER SUPPORT BRACKET WAS FOUND LOCATED BTW FS193.00/FS202.75 AND BTW STGR19R/21R WAS REPLACED PER CRJ-900 SRM 51-42-21-001-001-A01