Where are the temperature switches located that sense duct temperature?

The temperature switches that sense duct temperature are indeed located forward of the firewall shutoff and by the instrument panel feet. This positioning is essential for accurate reading and monitoring of the temperature in the duct system that directs air into the cabin. By placing the temperature switches in this area, they can effectively gather data on the air temperature before it enters the cockpit, ensuring that the environmental controls can make necessary adjustments for passenger comfort and safety.

The location is also strategic because it allows for proximity to the major control systems that manage the cabin temperature, facilitating quicker and more accurate responses to any temperature changes. This ensures that the system can operate efficiently and maintain the desired environment within the aircraft.