What was found
DURING C CHECK, AFT STAIRWELL LIGHTENING HOLE CRACKED 6 O'CLOCK POSITION RIGHT SIDE BS 1240 (TORQUE BOX). CUT OUT DAMAGED AREA AT AFT STAIRWELL LIGHTENING HOLES 6 O'CLOCK POSITION BS 1240 RT IAW SRM 51-40-2 FIG 1, DIMENSION 1.25" BY .5". FABRICATED DOUBLER REPAIR AT AFT STAIRWELL LIGHTENING HOLE 6 O'CLOCK POSITION BS 1240 IAW SRM 53-10-2 FIG 6 AND 51-40-1 FIG 1. TREATED AND PRIMED PART AND AREA IAW SRM 51-10-2. INSTALLED DOUBLER REPAIR IAW SRM 51-30-2.