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 STA FS=337 TO FS=364 AT MAIN AVIONICS COMPARTMENT. CORRECTIVE ACTION: STRINGER 25RH IN STA FS=337 TO FS=364 AT MAIN AVIONICS COMPARTMENT WAS REPLACED PER CRJ-900 SRM 51-42-06-001-001-A01 PAR 6.C AND SRM 51-42 -20-001-001-A01 PAR 6.C.