If your bearing pointer is incorrectly set during a DME arc maneuver, what effect may it have?

When the bearing pointer is incorrectly set during a Distance Measuring Equipment (DME) arc maneuver, it can lead to navigational errors. This is a critical situation in navigation, as the bearing pointer is used to indicate the direction to a navigational aid, such as a VOR (VHF Omnidirectional Range) station. If the bearing pointer is misaligned, the pilot may inadvertently navigate off course or misinterpret their position relative to the DME arc, which can result in potentially serious consequences, such as straying into controlled airspace or failing to follow the intended flight path.

In navigation, accuracy is paramount, especially in operations involving DME arcs where precise positioning plays a fundamental role in maintaining the required altitude and distance from the arc. Incorrect settings can therefore compromise safety and operational effectiveness, increasing the pilot's workload and possibly leading to a situation requiring corrective actions.