What was found
L-3 WINDOW HEAT INOP. PERFORMED BITE CHECK OF RIGHT FORWARD/ LEFT SIDE WINDOW HEAT CONTROL UNIT AND FOUND IT TO BE FAULTING 'L3 WINDOW SENSOR' REF AMM 30-41-01. T/S PER FIM TASK 30-41 FAULT. MAIN AND SPARE SENSE OHMED GOOD @ 293.7. CHECKED J9-J12 AT L3 WINDOW. SUSPECT BAD WINDOW SWAPPED. DMI REMAINS OPEN. ;REMOVED L3 WINDOW. INSPECTED WINDOW FRAME, NO DEFECTS NOTED. INSTALLED SERVICEABLE WINDOW ASSY PER AMM 56-11-10. WINDOW HEAT OPS NORMAL IAW AMM 30-41-00.