As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON LATCH PIN INTERCOSTAL LEFT TO STG•R 27 AND BTW FS394 TO FS400 INTERNAL STRUCTURE AT AVIONICS COMPARTMENT. LATCH PIN INTERCOSTAL LEFT TO STGR27 AND BTW FS394 TO FS400 INTERNAL STRUCTURE AT AVIONICS COMPARTMENT WAS REPLACED PER CRJ-900 SRM 51-42-06-001-001-A01 AND SRM 51-42-21-001-001-A01.