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

I-4-3-App C-4 Procedures — Aircraft Operations — Volume II
3.2.2.2 Influence of the flight technical tolerances
a) From “c” draw two lines at 5 degrees on each side of the nominal outbound leg.
b) Locate points “d1”, “d2”, “d3” and “d4” on these lines (Table I-4-3 App C-2, lines 12 and 13).
c) With a centre on “e2” at a distance r from “d2” on the perpendicular line to the nominal outbound leg (line
passing through d2 and d4), and a radius r, draw the inbound turn beginning at “d2”. Locate points “f” and “g”
after 50 and 100 degrees of turn from “d2”. With centres on “e3” and “e4”, draw the corresponding arcs
beginning at “d3” and “d4”. Locate points “h”, “i” and “j” after 100, 150 and 200 degrees from “d4” and points
“k” and “l” after 200 and 250 degrees of turn from “d3”.
3.2.2.3 Influence of the wind
a) The wind effect is calculated for each point by multiplying the wind speed w by the flying time from point “a”.
b) Draw arcs with centres “c”, “d2”, “f”, “g”, “h”, “i”, “j”, “k” and “l” and radii Wc, Wd2, Wf, Wg, Wh, Wi, Wj, Wk
and Wl (Table I-4-3 App C-2, lines 14 to 21).
3.2.2.4 Drawing of the outline of the template. The outline of the template is composed of:
a) the tangent passing through “a” to the arc centred on “c”;
b) the common tangent to the arcs centred on “c” and “d2”;
c) the spiral envelope of the arcs centred on “d2”, “f” and “g”;
d) the spiral envelope of the arcs centred on “h”, “i” and “j”;
e) the spiral envelope of the arcs centred on “k” and “l”;
f) the common tangent to the spirals c) and d);
g) the common tangent to the spirals d) and e); and
h) the tangent passing through “a” to the spiral e).
3.2.3 Construction of the 80° — 260° procedure turn template
3.2.3 (Reference Table I-4-3-App C-3 and
3.2.3 Diagram I-4-3-App C-4)
3.2.3.1 Nominal track. Draw a line representing the axis of the procedure and locate points “a” and “b” on it
(Table I-4-3-App C-3, line 10). With a centre “c” at a distance r (Table I-4-3-App C-3, line 5) from “b” on the
perpendicular line to the procedure axis passing through “b”, draw the nominal outbound turn of 80° and locate point
“d” at the end of this turn. From “d” draw the tangent to the nominal outbound turn and locate point “e” on this tangent
(Table I-4-3-App C-3, line 11). With a centre on “f” and a radius r, draw the nominal inbound turn of 260° beginning
at “e”.
23/11/06