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

Appendix to Chapter 7
VISUAL MANOEUVRING USING PRESCRIBED TRACK
1. GENERAL
1.1 In those locations where clearly defined visual features permit, and if it is operationally desirable, a specific
track for visual manoeuvring may be prescribed (in addition to the circling area). This track should be included inside
the limits of the circling area designed for the same aircraft categories. When it is not the case, the procedure should be
named: “VISUAL approach procedure” instead of “VISUAL manoeuvering.”
1.2 The visual features used to define the track and (if necessary) altitude changing points on the track may be
complemented with radio fixes (i.e. VOR radial, DME distance, etc.). The tolerance of the radio fix must be equal to or
better than the tolerance of the visual feature. A radio fix cannot be used if the corresponding visual feature does not
exist.
1.3 At the end of the visual manoeuvring track, a go-around procedure for a second prescribed track manoeuvring
is provided. In some cases, the go-around procedure can join the instrument missed approach procedure.
2. TRACK
2.1 Several kinds of tracks have to be considered and the more common cases are illustrated in
Figure I-4-7-App-1.
2.2 Gathering together of the tracks. It is possible to develop one track for each aircraft category, but for the sake
of simplicity, it is recommended that one track be used for all the categories or one for Cat A and B and another for Cat
C, D, E, if this does not lead to operational constraints.
2.3 Diverging point. This point must be defined with a clearly identifiable visual feature (complemented if
necessary by a radio fix with a tolerance less than 0.5 NM, i.e. middle marker or DME distance).
2.4 Diverging segment
2.4.1 This segment joins the final instrument approach segment to the downwind leg of the prescribed track.
In some cases, this segment can be replaced by a turn (see Figure I-4-7-App-1 e)) or an S-type manoeuvre (see
Figure I-4-7-App-1 c)).
2.4.2 In the case of Figure I-4-7-App-2, it is recommended that the end of the diverging segment occur before the
point abeam the threshold used for the prescribed track.
I-4-7-App-1 23/11/06