What was found
DURING A STRUCTURAL INSPECTION, CORROSION WAS FOUND AT A FASTENER HOLE LOCATED ON THE LH WINGLET LOWER SURFACE, AT THE SUPPORT STRUCTURE OF ACCESS PANEL 551AB, SEE FIGURE 1 FOR DAMAGE OVERVIEW. THE AFFECTED FASTENER HOLE INVOLVES BOTH THE WING SPAR II AND WINGLET RIB 1 FLANGES. ALL CORROSION WAS REMOVED BY REAMING THE FASTENER HOLE (INCREASING ITS DIAMETER). AFTER REMOVAL, THE FINAL HOLE DIAMETER MEASURED 9.80 MM. THIS CONDITION REPORTEDWAS REPAIRED IAW ETD2026-190-001038 REV. A DTD JAN 29 2026 AND DOCUMENTED UNDER COOPESA EO COO-EO-2026-23831-R00. JOB A1Q328 ITEM 5-41