What was found
DURING CLIMBOUT, RIGHT WING OVERHEAT LIGHT ILLUMINATED. LIGHT EXTINGUISHED WITH ISOLATION AND BLEED AIR VALVES CLOSED. PERFORMED PNEUMATIC DOWN BLEED TEST PER MAINTENANCE MANUAL 36-11-00 PAGE 509. SYSTEM TEST OK PER PNEUMATIC BLEED DOWN CHART FIGURE 502. MANUALLY INSPECT LEADING EDGE AND 3 / 4 PYLONS FOR LEAKS. NO LEAKS FOUND. TROUBLESHOT OVERHEAT DETECTION SYSTEM PER WIRING DIAGRAM MANUAL 26-18-11 PAGE 1. FOUND THERMAL SWITCH S1049 IN NR 4 PYLON TO BE OUT OF MIN/MAX RESISTANCE VALUES PER OVERHEAT DETECTION ELEMENT RESISTANCES VALUE CHART PER MAINTENANCE MANUAL 26-18-00. REPLACED S1049 SWITCH PER MAINTENANCE MANUAL 26-18-02. OPERATIONS NORMAL PER MAINTENANCE MANUAL 26-18-00.