The heated floor-mats supply heat to the cold areas of the floor in the flight compartment for the feet of the flight crew.

The heated floor mats have an interface with the component Secondary Power Center (SPC).

The Flight Crew floor-heaters are installed on the flight compartment floor, one on each side of the two control columns. Scuff plates, which are attached to the floor with screws, prevent damage to the flight crew floor heaters. Also, there are strips of tape to insulate the flight crew floor heaters from the floor and the scuff plates. The flight crew floor heaters are approximately 15 in. (38.10 cm) long, 2.5 in. (6.35 cm) wide and 0.38 in. (9.65 mm) thick. They are made of a heating element between plies of silicone made stronger with fiberglass plies.

The secondary power center supplies 28 VDC to the flight crew floor heaters. The pilot floor heaters are connected to the LSPC D-7 (L FOOT WARM) circuit breaker. The copilot floor heaters are connected to the RSPC D-7 (R FOOT WARM) circuit breaker.

Each floor heater supplies 0.4 W for each in(2.54 cm), for a total of 12.1 W. The heat of the flight crew floor heaters is applied equally across the full surface of the scuff plates.

The heating element of each flight crew floor heater has a positive temperature resistance factor. When the temperature of the floor heater increases, the electrical resistance of the heating element also increases. This causes the floor heaters to use less current and control their temperature automatically. Also, an internal thermal switch prevents the flight crew floor heaters from an overheat condition.

The pilot's heated floor mats system operate independently from the copilot system. The two systems operate automatically when electrical power is available to the aircraft. The systems can only be turned off when their related circuit breaker is opened. The heated floor mats system is made to operate from 15 to 35 °C (59 to 95 °F) without external control. This temperature range is sufficiently large to prevent the constant operation of the thermal switch.

When the flight crew floor heaters are supplied with 28 VDC, their internal heating elements start to operate. The heating elements supply heat and apply it equally across the full surface of the scuff plates.

If the temperature of the floor heater becomes more than the higher limit, the thermal switch opens to prevent an overheat condition. When the temperature of the floor heater decreases to the usual range, the thermal switch closes and the floor heater continues to operate usually.