What degree heading change is recommended for updating the ETA to the next checkpoint when dealing with weather deviations?

When updating the Estimated Time of Arrival (ETA) to the next checkpoint, especially in the context of weather deviations, a 60-degree heading change is recommended. This degree change allows for an effective maneuvering strategy that enables the aircraft to detour around adverse weather while still making progress towards the intended flight path.

The 60-degree change strikes a balance between maintaining a direct course and effectively managing the necessary deviation from the intended track. This change allows pilots to navigate around weather disturbances rather than flying directly through them, thereby ensuring safety and compliance with regulations regarding weather avoidance.

While larger heading changes, such as 90 or 120 degrees, might seem appropriate for more significant weather avoidance, they can lead to longer detours and potentially increased flight time. A smaller adjustment of 30 degrees generally may not provide enough deviation to effectively skirt around significant weather phenomena.

Utilizing a 60-degree heading change is a practical approach that aligns with aviation best practices, allowing pilots to adapt their routes dynamically while ensuring safety and efficiency in their flight operations.