A momentary amber WING ANTI-ICE FAULT light indicates.

A momentary amber WING ANTI-ICE FAULT light indicates that the valves responsible for wing anti-ice functionality are in the process of moving to their designated positions. This light serves as a notification that the anti-ice system is actively trying to adjust but may not yet be in the optimal state for operation. It's essential for pilots to understand that this indication is part of the system's status updates and can represent a transient condition as the aircraft systems communicate their status.

This momentary light is not indicative of issues like high-pressure or high-temperature conditions, nor does it mean that the valves are closed; rather, it highlights the operational process of the system's components as they correctly reposition within the anti-ice system. Understanding this point helps pilots maintain awareness of the anti-ice mechanisms during flight, ensuring effective performance in potentially icy conditions.