In a Localizer Back Course approach, the CDI must be set to the reciprocal of the APP CRS course. Which box on the approach chart provides this course?

In a Localizer Back Course approach, the CDI must be set to the reciprocal of the APP CRS course. Which box on the approach chart provides this course?

• A. APP CRS box
• B. Final Approach Fix box
• C. Missed Approach Point box
• D. Runway heading box

Answer: (A)

In a localizer back course, you set the CDI to the reciprocal of the published final approach course so you’re effectively flying the opposite direction along the localizer. The chart’s APP CRS box lists that final approach course. By taking its reciprocal, you get the correct CDI setting for the back course. The other boxes don’t provide the needed course value: the FAF box marks where the descent begins, the Missed Approach Point box shows where to go around, and the Runway heading box gives the runway’s heading—not the approach course to set on the CDI.

In a localizer back course, you set the CDI to the reciprocal of the published final approach course so you’re effectively flying the opposite direction along the localizer. The chart’s APP CRS box lists that final approach course. By taking its reciprocal, you get the correct CDI setting for the back course.

The other boxes don’t provide the needed course value: the FAF box marks where the descent begins, the Missed Approach Point box shows where to go around, and the Runway heading box gives the runway’s heading—not the approach course to set on the CDI.