What was found
R/W L/E STA171 PANEL SUPPORT RIB CRACKED AT LIGHTING HOLE. REMOVED DAMAGED RIB AT R/W L/E STA 171, O/B OF DEFUEL VALVE IAW B727 SRM 51-30-2. FABRICATED RIB FROM 2024-T3 0.40 SIZE 15" BY 7" PO 9002715, IAW B727 SRM 51-20-1, AND SRM 57-20-2. TREATED AND PRIMED PART IAW B727 SRM 51-10-2. INSTALLED RIB IAW B727 SRM 51-30-2.