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= 319.70TO FS= 333.00AT MAIN AVIONICS COMPARTMENT. STRINGER 25RH IN STA. FS= 319.70TO FS= 333.00AT MAIN AVIONICS COMPARTMENT WAS EVALUATED OUT OF LIMITS PER CRJ 900 SRM 53-00-00-101-001-A01. AND REPLACED PER CRJ-900 SRM 51-42-06-001-001-A01.