What was found
CORROSION FOUND AT WS29.00 ON STRUCTURE SIDE WHERE PANEL 521AT MEETS STRUCTURE. REMOVED CORROSION AT L/H WS 29.00 WHERE ACCESS PANEL 521AT ATTACHES TO THE WING IAW CRJ 900 SRM 51-21-06-001-001-A01. BLENDED CORROSION DAMAGE ON L/H WING UPPER FIXED LEADING EDGE LANDING STRIP SS15.50 IAW REO 690-57-41-470. REMOVED AND REPLACED ALL FASTENERS THAT WERE BLENDED OVER IN THE REWORKED AREA ON L/H WING UPPER FIXED LEADING EDGE LANDING STRIP SS15.50 IAW REO 690-57-41-470. RESTORED THE SURFACE FINISH OF THE REWORKED AREA ON L/H WING UPPER FIXED LEADING EDGE LANDING STRIP SS15.50 IAW REO 690-57-41-470. REPAIR COMPLIED WITH IAW MHI RJ REO 690-57-41-470.