What was found
PAX CABIN, AFT SECTION, FLOOR BTWN FR 69 & FR 70, Y-1194.8, SHEAR PLATE CORRODED. REPLACED THE SHEAR PLATE IAW SRM 53-41-17-01A, FIGURE 001, ITEM 310. REV 157. AND INSTALLED IAW DWG D534 74180, SHEET 6, ITEM 74. (LP: 1567232). AIRCRAFT WAS GROUNDED.