What was found
AFT CARGO COMPARTMENT, INNER SURFACE OF SKIN HAS CORROSION BETWEEN STA 813 AND 898.5 AND L 26L TO 25L LAP SEAM AREA. INSTALLED DOUBLER AND TRIPLER REPAIR AT AFT CARGO COMPARTMENT, INNER SURFACE SKIN BETWEEN STA 813 AND 898.5 AND L-26L AND L-25L IAW BOEING MESSAGE NUMBER 1-383755005-4 DATED 20-JUN-2007 AND AIRTRAN EA 17-53-00541 IR. MATERIAL USED FOR DOUBLER AND TRIPLER 7075-T6 .080. SIZE 1.0 X 19.0 INCHES.