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Aircraft Operations. Volume II - Construction of Visual and Instrument ...

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Part <strong>II</strong>I — Section 3, Chapter 1 <strong>II</strong>I-3-1-9<br />

15 °<br />

15°<br />

d*<br />

r<br />

Obstacles in this area must be considered<br />

twice:<br />

1) in the straight segment, use <strong>of</strong> reduced<br />

margins associated with secondary area;<br />

2) in the turns, use <strong>of</strong> full margins<br />

associated with turns.<br />

d r<br />

d o<br />

Latest TP<br />

TP<br />

c<br />

Secondary area<br />

Outer boundary <strong>of</strong> turn anticipation area (at the turn altitude)<br />

r<br />

Waypoint<br />

Wind spiral<br />

Secondary area<br />

Figure <strong>II</strong>I-3-1-6. Turn at an altitude/height towards a waypoint<br />

(Example for Basic GNSS)<br />

d o<br />

55.6 km (30.0 NM)<br />

from ARP<br />

Primary area<br />

9.3 km (5.0 NM)<br />

18.5 km (10.0 NM)<br />

15°<br />

14.8 km (8.0 NM)<br />

23/11/06

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