What was found
DURING C-16 CHECK, A .5000 INCH CRACK WAS FOUND ON LOWER FLOORBEAM TIE STRAP AT BS 340, STR 45 LT, JUST ABOVE AIR STAIR RAIL OUTBOARD END. MAINTENANCE STOP DRILLED END CRACK ON LOWER FLOORBEAM TIE STRAP AT BS 340; FABRICATED A REPAIR PLATE; REMOVED VERTICAL STIFFENER FOR ACCESS; INSTALLED REPAIR PART AND REINSTALLED VERTICAL STIFFENER IAW SRM.