What was found
AFTER LH AILERON BUSHINGS REMOVAL: WEAR AND CORROSION IN ALL BORE LUGS (L1,L2,L3,L4,L5,L6) AT CENTER HINGE FITTING AND HINGE 4 LUG LOWER OF AILERON WAS FOUND BORE LUGS L1 & L6 WERE CLEANED PER CRJ 900 SRM 51-26-00-001-001-A01 CLEANING, BORE LUGS L2, L3, L4 & L5 WERE REPAIRED PER 690-57-61-456 REV: - A AND HINGE 4 LUG LOWER WAS REPAIRED PER REO 690-57-61-461 REV. - A