What was found
AFT PIT FLOORBEAM UPPER T-CAP AT UPPER AND LOWER SURFACES HAS CORROSION AT BS1197 BETWEEN RBL 22 TO RBL 44. REMOVED CORROSION IAW MM 51-00-53. FOUND TO BE BEYOND LIMITS IAW SRM 53-00-07. MATERIAL ID IS BAC1506-3123 IAW DRAWING 146T1206. FABRICATED NEW T-CAP IAW DRAWING 146T1206. ALODINED, PRIMED AND PAINTED IAW SRM 51-20-01. INSTALLED NEW T-CAP IAW SRM 51-40-02. REMOVED AND REINSTALLED AUX GUIDES IAW SRM 51-40-02. REFERENCE SO 599125 OPERATION 25191.