What was found
STA 947 UPPER T-CAP HAS AREAS OF CORROSION FROM LBL 15 TO RBL 4. GROUNDED - YES. REMOVED DAMAGE AND FOUND OUT OF LIMITS I.A.W. B737-900ER SRM 53-70-51-1A-1, ORIGINAL THICKNESS OF UPPER FLANGES .180, MAT REMOVED .080, MAT REMAINING .100 I.A.W. B737-900ER SRM 53-70-51-1A-1 AND PER BAC DWG#147A5504 REV A. ACCOMPLISHED UPPER CHORD REPAIR I.A.W. B737-900ER SRM 53-70-51-2R-5, REMOVED AND RE-INSTALLED SUB-STRUCTURE PER BAC DWG#147A5650 REV A AND I.A.W. B737-900ER SRM 51-40-02.