What was found
DURING A HEAVY MAINTENANCE CHECK, FOUND LT FUSELAGE SIDE BOX BEAM FLANGE AT STRINGER 15L FRAME 43, CRACKED, VERIFIED. CUT OUT DAMAGE. HFEC INSP ACCOMPLISHED. INSTALLED PRESSURE PLATE AND NEW FITTINGS. ALL WORK ACCOMPLISHED IAW SB A320-53-1251/EC A320-53-1251-01.