BY ORDER OF THE SECRETARY OF THE AIR FORCE AIR FORCE ...

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AFMAN 11-217V1 3 JANUARY 2005
Figure 13.1. Low Altitude Approach.
13.2. Overview. There are two broad categories of low altitude approaches: course
reversals and procedure tracks. Before we look at each type in detail, here are some
guidelines that apply to all low altitude approaches:
13.2.1. Initial Approach Fix (IAF). Most approaches begin at an IAF. ATC will
normally clear you to the appropriate IAF and then clear you for the approach. Unless
ATC specifically clears you otherwise, you are expected to fly to the IAF and execute
the full instrument approach procedure as published.
13.2.2. Final Approach Segment. Some approaches depict only a final approach
segment, starting at the FAF. In these cases, radar is required to ensure you are properly
aligned with the final approach course at the appropriate altitude. When ATC clears you
for the approach, maintain the last assigned altitude until established on a segment of
the published IAP.