During cruise in VMC conditions, a left WING-BODY OVERHEAT light illuminates. Below is a solid deck from FL 260 to 12,000 feet with reported moderate rime icing. As you reach for the QRH, ATC directs you to begin an expedited descent to 16,000 feet. What considerations do you have? What causes a WING-BODY OVERHEAT light?
Answer: A WINGBODY OVERHEAT is caused by overheat sensors detecting a hot bleed air leak. The sensors for a left overheat are in the left engine strut, left wing leading edge, left air conditioning bay, keel beam, and APU bleed duct. The sensors for a right overheat are the right engine strut, right wing leading edge, and right air conditioning bay. In the situation above, the QRH will direct you to avoid icing conditions in the case of a left or right WINGBODY OVERHEAT.