What was found
DURING HEAVY MAINTENANCE, REF NDT 57-40-00-211-802, CRACK RIB 22 WING MAIN BOX LEADING EDGE AREA LT WING, REF AEROMAN WO 2020-388/1, NR 2020-360941. REMOVED AND REPLACED RIB 22 AND FASTENERS LOCATED LEADING EDGE AREA LT WING, IAW SRM 51-40-08 AND DRAWING 190-31005-409.