What was found
EXTERNAL FUSELAGE BS 680 AT STR 7R HAS SKIN BUTT JOINT WITH A LIGHTING STRIKE BURN. BLENDED OUT AREA OF LIGHTNING STRIKE IAW B727 SRM 53-30-3, FIG 20. MATERIAL LOSS OVER 30 PERCENT AND LIGHTNING STRIKE STILL PRESENT AND OUT OF LIMITS IAW B727 SRM 53-30-1. CUT OUT DAMAGED SKIN AREA DIM 5.75 BY 5.75 IAW B727 SRM 53-30-3, FIG 3A. HFEC COMPLIED WITH IN CUT OUT AREA, NO CRACKS NOTED IAW B727 NDTM PT.6 51-00-00, FIG 23. FABRICATED DOUBLER REPAIR FROM 2024T3, .080, DIM 8.75 BY 11 AND FILLER FROM 2024T3, .040, DIM 4 BY 5.75 IAW B727 SRM 53-30-3, FIG 3A. TREATED, PRIMED AND INSTALLED REPAIR IAW B727 SRM 51-10-2, 51-30-2 AND 53-30-3, FIG 3.