What was found
PAE - FLT NR 3791 - DURING ROUTINE SCHEDULED C-4/S-1 MAINTENANCE CHECK, FOUND CORROSION ON FLOOR SUPPORT RAIL AT AFT LEFT LAV HOLD DOWN SUPPORT X3155, 3 CM FORWARD OF FR 66, Y-440 - Z540. REPAIRED FLOOR SUPPORT RAIL PER AWA ER 32-53-15-04. (M)