What type of indicator is unnecessary for the Engine Air Inlet Ice Protection system?

In the context of the Engine Air Inlet Ice Protection system, a temperature indicator is considered unnecessary. This is because the primary function of the ice protection system is to prevent ice formation on the air intake, which is achieved through methods such as heating the inlet air. The essential components of this system typically include elements that control airflow and monitor the system’s operational status, rather than specifically measuring temperature.

Pressure gauges are important as they help monitor the conditions within the system and ensure that proper airflow is maintained. Shutoff valves are critical in managing the flow of heated air into the air intake to prevent ice buildup when needed. Indicator lights serve a vital purpose by providing visual confirmation that the ice protection system is activated and functioning correctly.

Without the requirement to track the temperature directly, the temperature indicator does not contribute significantly to the effective operation or monitoring of the ice protection system. It simply does not provide the necessary information or control needed for the system to function effectively while safeguarding the engine against ice accumulation.