What was found
REF TO TRFKE00GTBX6. AFTER REMOVAL OF BEARING AND BUSHING ON RH AILERON CORROSION ON LUGS BORES: R2, R3, R4 AND R6 WAS FOUND AT CENTER HINGE FITTING AND UPPER/LOWER HOLES OF OUTB HINGE FITTING. LUGS BORES R4, R6 AT CENTER HINGE FITTING AND UPPER HOLE OF OUTB HINGE FITTING AILERON RH WERE CLEANED PER CRJ 900 SRM 51-26-00-001-001-A01 PAR 5 C. AND NOT DAMAGE FOUND. LUG BORES R2 AND R5 AT CENTER HINGE FITTING WERE REPAIRED PER 670-57-61-237 REV - - . LUG BORE R3 AT CENTER HINGE FITTING WAS REPAIRED PER REO 690-57-61-555 REV - -. FINALLY, LOWER HOLE OF OUTB HINGE FITTING WAS REPAIRED PER REO 690-57-61-554 REV. - A