As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON INTERNAL STRUCTURE OVER S26R BTW FS349 - 364 AT MAIN AVIONICS COMPARTMENT. CORROSION ON INTERNAL STRUCTURE OVER STGR26RH BTW FS349.00 / FS364.00 AT MAIN AVIONICS COMPARTMENT WAS EVALUATED OUT OF LIMITS PER CRJ900 SRM 53-21-03-101-006-A04 AND WAS REPLACED PER CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-21-001-001-A01.