What is the function of an anti-ice overheat light in airplanes equipped with bleed air anti-icing?

The function of an anti-ice overheat light in airplanes equipped with bleed air anti-icing is to signal an over-temperature condition. This light alerts pilots that the temperature of the bleed air being used for anti-icing is excessively high, which can jeopardize the structural integrity of the aircraft and the proper functioning of the anti-icing systems.

When the anti-ice system operates, it utilizes hot bleed air to prevent ice accumulation on critical surfaces. If this air becomes too hot, it can lead to damage to the components or systems in which it is circulating. Therefore, the overheat light serves as an important warning mechanism, enabling the flight crew to take appropriate action if necessary to prevent potential system failures.

Understanding this function is critical for maintaining safety and operational effectiveness while flying in conditions conducive to icing. Monitoring the anti-ice system is vital, as inappropriate temperatures can lead to ice accumulation problems, affecting aircraft performance and safety.