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

I-4-3-App C-14 Procedures — Aircraft Operations — Volume II
b) with a centre on S, draw arcs “Ds” with a radius Ds, “Dl” with a radius Ds – dl, “D2” with a radius Ds + dl,
“DLs”, “DL1” and “DL2” with radii DLs, DLs – d2 and DLs + d2
23/11/06
where dl and d2 are the DME tolerance associated with D and DL:
dl is 0.46 km (0.25 NM) + 0.0125 D;
d2 is 0.46 km (0.25NM) + 0.0125 DL
c) locate points “A” at the intersection of “RP” and “Ds”
“Al” and “A2” at the intersections of “RP1”
with “Dl” and “D2”
“A3” and “A4” at the intersections of “RP2”
with “D1” and “D2”.
3.3.4.1.1.3 Protection of the outbound turn and outbound leg
a) Place racetrack template point “a” on Al, with axis parallel to the inbound track, and draw curve “1” (part of the
outline of the template);
b) place template point “a” on A3, with axis parallel to the inbound track, and draw curve “2” (part of the outline
of the template) and line “3” (protection of the outbound leg on the non-manoeuvring side); and
c) draw the common tangent to curves “1” and “2” and extend the straight part of curve “1” and the line “3” in the
direction of the outbound end.
3.3.4.1.1.4 Area containing the end of the outbound leg
a) Locate points Cl and C’3 at the intersection of the extension of curve “l” with the arcs DL1 and DL2;
b) locate point C2 between Cl and C’3 at a distance (dl + d2 – 1.8) km or (dl + d2 – 1) NM from C’3;
c) draw a parallel line to the inbound track through C2 and locate points C3 at the intersection of this line with arc
DL2;
d) do the same thing as in a), b) and c) with the line “3” instead of curve “l” and points C4, C’6, C5 and C6 instead
of Cl, C’3, C2 and C3 (see Figure I-4-3-App C-13 a)); and
e) if the aircraft intercepts the VOR radial before reaching the limiting outbound distance, the pilot is assumed to
follow the indications of the VOR without drifting any further from the procedure axis, so:
where C5 and C6 are further from the procedure axis than RP2 (see Figure I-4-3-App C-13 b)), replace C5 and
C6 by the intersections of RP2 with line “3” and DL2, and the end of the outbound leg is contained in the area
Cl, C2, C3, C4, C5 and C6; and
where C4, C5 and C6 are further from the procedure axis than RP2 (see Figure I-4-3-App C-13 c)), replace C4
and C6 by the intersections of RP2 with DL1 and DL2, and the end of the outbound leg is contained in the area
Cl, C2, C3, C4 and C6.
3.3.4.1.1.5 Protection of the inbound turn. Rotate the template 180°, then:
a) place template point “a” on C2 and C3, with axis parallel to the inbound track, and draw curves “4” and “5”
(part of the protection line of a turn of more than 180°) and their common tangent;