What was found
CORROSION ON CENTER FITTING LUG L1, L2, L3, L4, L5, L6 AT AILERON WAS FOUND. LUGS BORE L3 & L4 AT CENTER FITTING OF LH AILERON WERE CLEANED PER CRJ 900 SRM 51-26-00-001-001-A01 AND LUGS BORE L1, L2, L5 & L6 WAS REPAIRED PER REO 670-57-61-107 REV:-B