What was found
PAE - FLT 7827 - DURING ROUTINE SCHEDULED C-11 MAINTENANCE CHECK, FOUND CORROSION AT AFT. CARGO BAY CARGO FLOOR BEAM BS 796-817, RBL 13.5 AT NUTPLATE HOLES, TOP OF BOTTOM SIDE. REPLACED SECTION OF FLOOR BEAM FROM BS 780 TO 821 AT RBL 13.5 PE SRM 53-00-51. (M)