What was found
AFT CARGO STA 1620 FRAME AT BL 0 IS CORRODED. MAJOR REPAIR ACCOMPLISHED. REMOVED CORRODED SECTION OF FRAME BETWEEN STR 29R TO STR 30. FABRICATED A REPAIR DOUBLER AND STRINGER CLIPS, PER BAC DWG 140N2005, AND REPLACED 2 SHEAR TIES PER TIMCO REO G14040, REV A ON NON ROUTINE 23803. THIS REPAIR HAS RECEIVED FIRST STAGE APPROVAL FOR STATIC STRENGTH ONLY. A NEW FAA FORM 8100 -9 085625 MUST BE ISSUED ON OR BEFORE 13SEP2013. THE AIRCRAFT WILL BECOME UNAIRWORTHY UNLESS A NEW 8100-9 IS ISSUED BEFORE 13SEP2013.