What was found
CABIN BS 580 FRAME INNER CHORD WORN FROM CONTACT WITH RT SIDEWALL SUPPORT AT S11R. BLENDED WORN AREA ON 580 FRAME. VERIFIED MATERIAL BY NDT. ORIGINAL "T" AT .056" MATERIAL LOSS AT LOWEST POINT IS .011", .045 REMAINING. EXCEEDS 10 PERCENT MAX LIMITS REFSRM 53-10-10. FABRICATED AND HEAT TREATED REPAIR DOUBLER (TRACKING NR 416821) TO T-6 FROM 7075-0. REMOVED DAMAGE AREA FROM STA 580 FRAME, TREATED AND PRIMED REF SRM 51-10-2. INSTALLED REPAIR DOUBLER REF SRM 53-10-1 FIG 1. THIS IS CLASSIFIED AS A MAJOR REPAIR.