What was found
CORROSION ON FRAME LWR FLANGE AFT SIDE BS 990, STR 29L TO 29R. BLENDED, CORROSION OUT OF LIMITS IN 2 AREAS PER B727 SRM 53-30-1. CUT OUT DAMAGED AREA OF FRAME AND FABRICATED SHEAR TIE REPAIR DOUBLERS, 2, FROM 7075-T0, .063" BY 3" BY 4" AND .063" BY 3" BY 4.5", PO NR 6151157, PER B727 SRM 53-10-4 FIG 11. HEAT TREATED REPAIR PARTS TO T6 HARDNESS PER FASI ENGINEERING REPORT NR 2-37153-801 REV IR. TREATED, PRIMED, AND INST REPAIR PARTS PER B727 SRM 53-10-4 FIG 11 AND 51-10-2.