As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INITIAL INSPECTION. CORROSION ON STRINGER SPLICE 26LH IN STA. FS= 329 TO FS= 339 AT MAIN AVIONICS COMPARTMENT. (E/E)(TCI:53-20-304). STRINGER SPLICE 26LH IN STA. FS= 329 TO FS= 339 WAS REPLACED PER CRJ-900 SRM 51-42-06. CORROSION LEVEL 2