What should be done when ICE is annunciated by the ice detection system?

When the ice detection system annunciates ICE, it indicates that ice is being detected on the aircraft. In such a scenario, it is crucial to ensure that the engine cowl anti-ice system is activated to prevent ice accumulation around the engines, which could adversely affect engine performance and safety. Activating the engine cowl anti-ice system helps maintain proper engine function by preventing ice from forming on engine components and ensures that the engines are protected from the serious consequences of ice buildup, such as potential engine stall or loss of thrust.

While other actions may also be prudent in an overall strategy for managing ice, such as maintaining adequate airspeed to avoid ice accumulation or checking cabin conditions for passenger comfort, the primary and immediate action when ICE is annunciated is to ensure that the anti-ice systems are engaged to mitigate the effects of ice formation directly.