What was found
DURING HEAVY MAINTENANCE, CRACK INDICATION ON FRAME 43 LT SIDE IN AFT FASTENER HOLE SIDE BOX BEAM AREA IN PASSANGER CABIN (1 EA), REF AEROMAN NR 2020-308011 WO 2020 330/1. PERFORMED PERMENANT REPAIR ON FRAME 43 LT SIDE ON SIDE BOX BEAM IN PASSANGER CABIN, IAW EC A320-53-1251-02. THIS IS A MAJOR REPAIR.