Extracted from the Pilot's Handbook of Aeronautical Knowledge, AC 61-23C, online at <a rel="nofollow" class="external autonumber" href="http://www.faa.gov/pilots/training/handbook/">[1]</a>
<a href="https://en.wikipedia.org/wiki/Federal_Aviation_Administration" class="extiw" title="w:Federal Aviation Administration">w:Federal Aviation Administration</a>
<a rel="nofollow" class="external autonumber" href="http://www.faa.gov/pilots/training/handbook/">[2]</a>