What was found
DURING HEAVY MAINTENANCE: CORROSION TOP SKIN PANEL UPPER SURFACE AFT AT FR42 Y1292 PLUS IN CENTER FUEL TANK; (RESOLVED ON W/O: 1200126 TASKCARD: NR-00041 ) REF AEM NR 2023-68924 FOR ALL WORK ACCOMPLISHED THE REPAIR OF THE CORROSION DAMAGE ON THE CENTER WING BOX UPPER SKIN PANEL UPPER SURFACE AT Y1292 AND BETWEEN STIFFENERS 16-17 IAW AEM EA# 57-0040-23 REV 0 ( COVER AND PART 1-5) AND AIRBUS RDAF REF 81174227/003/2023 #A AND EC # A23-220-01.