What was found
REFERENCE NON ROUTINE C073981. DURING DEN C3 C-CHECK, INSP, NOTED CORROSION IN THE AFT CABIN AREA ON THE FLOOR SUPPORT Y1292 BETWEEN FRAME 66 AND FRAME 68. MX REMOVED AND REPLACED THE FLOOR SUPPORT IAW SRM 53-00-14, SRM 51-42-11 AND SRM 51-44-11.