When approaching a localizer back course with a published front course of 030, what should you do to intercept the course?

To intercept a localizer back course when the published front course is 030, you should turn right. This is because the back course approach means you will be flying in the opposite direction of the front course. In this case, the back course would be 210 degrees, which is 180 degrees opposite to the 030 front course.

When intercepting a localizer back course, you need to first turn towards the right to align your aircraft with the back course signal. The localizer provides lateral guidance, and by turning right, you'll move closer to the centerline of the localizer for the back course. This approach is essential for maintaining the intended flight path during the approach phase.

Choosing to maintain the current heading would not bring you closer to the back course. Similarly, climbing immediately would not assist with the lateral alignment needed for the localizer. Thus, turning right is the appropriate action to engage the localizer for a successful back course approach.