What was found
1711-12 CORROSION SUSPECTED AT L/H WING TRAILING EDGE UPPER SKIN UNDER T/E SEAL PANEL AT SPOILER #4 BETWEEN RIB 17 AND 18./LH WING TOP SKIN TRAILING EDGE UPPER SKIN UNDER TRAILING EDGE PANEL, AT SPOILER #4 AND BETWEEN RIB 17 AND 20. PERMANENTLY REPAIRED AS PER AIRBUS DOSSIER #81082830 (ITEMS #8-9), TECHNICAL DISPOSITION TD/81082830/028/2022#B, REPAIR INSTRUCTION R572-58616 ISSUE K AND ERO #R5721-0107 REV.00. MAJOR REPAIR CATEGORY B PER RDAF #81082830/005/2022#A. REFER TO NRC 4001945-6000-0022 FOR SHORING. REFER TO AIRBUS DOSSIER # 81082830 FOR MORE DETAILS (ADMINISTRATIVE DOSSIER). SEE AWS FOR REPAIR STEPS AND ACCESS DETAILS. "