What was found
AFTER BUSHINGS REMOVAL, CORROSION WAS FOUND ON AILERON CENTER FITTING LUGS L1, L2, L5 AND L6 ALSO CORROSION ON LOWER AND UPPER LUGS OF OUT FITTING AT LH AILERON. LUGS BORES ON CENTER FITTING L1, L2 AND L6 AND UPPER LUG OF OUT FITTING FROM LH AILERON WERE CLEANED PER CRJ 900 SRM 51-26-00-001-001-A01 THEN INSPECTED PER CRJ 900 NDT MANUAL 51-20-009-210 AND NO DAMAGE WAS FOUND. CENTER HINGE FITTING ON BORE LUG L5 WAS REPAIRED PER REO 670-57-61-237 REV - - ALSO OVERSIZE BUSHING FOR LUGS L1 AND L6 WERE FABRICATED PER REO 670-57-61-237 REV - -. CENTER FITTING LUG L2 WAS REPAIRED PER REO 690-57-61-297 REV - -. FINALLY, LOWER LUG OF OUT FITTING AT LH AILERON WAS REPAIRED PER REO 690-57-61-539 REV - -.