As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON STRINGER 25RH IN FS= 349 TO FS= 364 AT INTERNAL STRUCTURE OF MAIN AVIONICS COMPARTMENT. STRINGER 25RH IN FS= 349 TO FS= 364 AT INTERNAL STRUCTURE OF MAIN AVIONICS COMPARTMENT (E/E) WAS REPLACED FOR A NEW ONE PER CRJ900 SRM 51-42-06-001-001-A01.