Where are the auxiliary electric heaters located?

• A. Two in the floor—one for the avionics and one for the cabin
• B. In the ceiling panels
• C. In the tail cone
• D. In the pilot seats

Answer: (A)

Auxiliary electric heaters are placed in the floor, with one serving the avionics bay and one serving the cabin. This layout lets heat be delivered directly to the areas that need it most while allowing independent control of cabin warmth and avionics temperature. The floor-mounted heaters warm the cabin quickly through ducts and also keep the avionics bay at a stable temperature, helping prevent condensation and equipment issues in cold conditions. They operate alongside the main heating system and draw from the aircraft’s electrical power.

Other locations would be less effective or introduce safety and distribution problems—for example, ceiling panels can create less even heating and drafts, the tail cone is inefficient for cabin/avionics heat and could pose safety concerns, and placing heaters in seats would be impractical and unsafe.