As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON INB LUGS AT AILERON HINGE NO.4 AND HINGE NO.1 ON REAR SPAR RH WING INB LUGS AT AILERON HINGE NO.4 WAS CLEANED PER CRJ 900 SRM TASK 51-26-00-001-001-A01 AND GVI WAS PERFORMED PER CRJ900 SRM 51-11-00-001-001-A01 AND NOT DAMAGE FOUND AND HINGE NO.1 ON REAR SPAR RH WING WAS REPAIRED PER REO 690-57-51-405 REV --