As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON STRINGER SPLICE 25RH IN FS= 327 TO FS= 337 AT MAIN AVIONICS COMPARTMENT. CORROSION ON STRINGER SPLICE 25RH IN FS= 327 TO FS= 337 AT MAIN AVIONICS COMPARTMENT WAS EVALUATED OUT OF LIMITS AND STRINGER SPLICE WAS REPLACED PER CRJ900 SRM 51-42-21-001-001-A01 , CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 53-00-00-101-001-A01