As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER REMOVAL OF RH AILERON BUSHINGS, CORROSION WAS FOUND ON LUG BORE OF R1, R2, R5 AND R6 OF CENTER HINGE FITTINGS AND HINGE LUG INBOARD OF RIGHT AILERON. LUGS R1 & R6 WERE CLEANED PER CRJ 900 SRM TASK 51-26-00-001-001-A01 CLEANING AND NOT DAMAGE FOUND. LUGS R2 & R5 WERE REPAIRED PER REO 670-57-61-237 REV --