What was found
UPPER FUSELAGE STATION 720D FRAME, AFT EDGE IS CORRODED AT STRINGER 4 RIGHT REMOVED CORROSION AT UPPER FUSELAGE STA 720D FRAME AFT EDGE AT STR 4 RIGHT AREA REF SRM 51-10-6 ORIGINAL MATERIAL .064", MATERIAL REMAINING .048", MATERIAL LOSS .016'. FOUND TO BE OUT OF LIMITS REF, SRM 53-10-1 FIG 1. FABRICATED REPAIR DOUBLER, REF SRM 51-40-3 FIG 1, MATERIAL USED 7075-0 .063, HEAT TREATED TO T-6. TRACKING NR 2007-11-015. TREATED AND PRIMED DOUBLER AND INSTALLED REF 51-10-2, 51-30-2 THIS IS CLASSIFIED AS A MAJOR REPAIR.