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

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I-4-6-24 Procedures — <strong>Aircraft</strong> <strong>Operations</strong> — <strong>Volume</strong> <strong>II</strong><br />

23/11/06<br />

Final<br />

approach<br />

obstacle<br />

clearance<br />

Transitional<br />

tolerance<br />

X<br />

Earliest MAPt<br />

SOC<br />

x<br />

OCA/H<br />

Criteria for straight<br />

missed approach apply<br />

2.5%<br />

TURNING ALTITUDE/HEIGHT<br />

Dotted outlines show the altitude<br />

which obstacles may reach at the outer<br />

edge <strong>of</strong> the secondary areas.<br />

Missed approach path<br />

O 1<br />

Turn initiation area<br />

Obstacle clearance surfaces<br />

Figure I-4-6-13. Obstacle clearance within turn initiation<br />

d3<br />

O<br />

2.5% TP<br />

30 m<br />

(98 ft)<br />

O 2<br />

Horizontal plane<br />

50 m (164 ft) below<br />

turn altitude<br />

O 2<br />

50 m<br />

(164 ft)<br />

(Cat H, 40 m (132 ft))<br />

K c<br />

K<br />

Horizontal surface<br />

Secondary area<br />

d3<br />

O<br />

TP<br />

d3<br />

O<br />

2.5%<br />

O 3<br />

latest<br />

TP<br />

O 3

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