How should you correct your course when it is inside of the arc?

To determine how to correct your course when you are inside of the arc, it's important to understand the relationship between bearing pointers and navigation systems. When you find yourself inside the arc, moving towards a VOR (VHF Omnidirectional Range), it is necessary to adjust your heading to maintain or re-establish the intended course.

The correct approach is to adjust the head of the bearing pointer 5° below the 90° index for each 0.5 nautical miles you are off track. This adjustment effectively aids pilots in ensuring they remain on course. When you are inside the arc, your navigation system suggests that you need to turn into the VOR with a slight adjustment, thus moving the bearing pointer down towards the 90° index.

Each step of 0.5 NM corresponds to a set degree adjustment to indicate how far off course you may be. Placing the bearing pointer 5° below the 90° index serves as a straightforward and effective method for adjusting your track back toward your desired airway when inside the arc, allowing for greater accuracy in navigation.

The other options suggest different degrees of adjustment, which do not align with standard navigational practices for this specific scenario.