What does a cyan ICE DETECTED (A) EICAS message indicate?

The cyan ICE DETECTED (A) EICAS message indicates that ice has been detected on the aircraft, and that the anti-ice systems are operational. This message serves as a critical warning to the flight crew, signaling that the aircraft is in conditions where ice accumulation is present, which can adversely affect performance and safety.

In response to this message, the pilots would typically need to ensure that the anti-ice systems are activated to mitigate the effects of ice build-up. The operational anti-ice systems work to prevent ice from forming on critical surfaces such as the wings and engine inlets. This proactive measure is essential, especially during flight through conditions associated with moisture at temperatures near or below freezing.

Other options do not accurately describe the implications of the cyan message. It is not simply a matter of no ice being detected while systems are operational, nor does it indicate that all anti-ice systems are off. Moreover, saying there's a system malfunction is inaccurate since the message confirms that ice is detected and actions are being taken.