What was found
CRACK ON NR 4 SLAT SKIN AT I/B UP STOP BLOCK FASTENER. STOP DRILLED CRACK AT NR 4 SLAT SKIN AT I/B UPSTOP IAW B727 SRM 51-10-1. ACCOMPLISHED 727 HFEC INSPECTION 51-00-00 CRACK CONTIMENT CONFIRMED. FABRICATED REPAIR DOUBLER MAT USED 2024-T3 .80 DIMENSION 11 INCHES BY 5 INCHES PO NR 9001811 IAW B727 SRM 57-50-3 FIG 1. TREATED ALODINED AT DOUBLER REPAIR IAW B727 SRM 51-10-2. INSTALLED DOUBLER REPAIR IAW B727 SRM 57-50-3 FIG 1 AND 57-50-2.