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

III-1-3-6 Procedures — Aircraft Operations — Volume II
Altitude
(m)
(Note 1)
23/11/06
Table III-1-3-2. XTT, ATT, area semi-width for en-route phase of flight,
IAF, IF, FAF, MAPt and TP fixes (km)
Table based on availability of more than two DME update stations (See Note 3)
XTT ATT
En-route IAF/IF FAF/MAPt/ TP
Semiwidth
XTT ATT
Semiwidth
XTT ATT
Semiwidth
4 500 For all altitudes 4.35 3.94 8.38
4 200 6.31 5.11 13.18 4.25 3.82 8.22
3 900 4.14 3.70 8.06
3 600 4.03 3.58 7.89
3 300 3.91 3.45 7.72
3 000 3.79 3.31 7.54 3.44 3.31 6.08
2 700 3.67 3.17 7.35 3.30 3.17 5.87
2 400 3.54 3.02 7.16 3.15 3.02 5.66
2 100 3.40 2.86 6.96 3.00 2.86 5.43
1 800 3.26 2.68 6.74 2.84 2.68 5.18
1 500 3.11 2.50 6.51 2.66 2.50 4.92
1 200 2.95 2.29 6.27 2.47 2.29 4.63
900 2.77 2.06 6.00 2.26 2.06 4.31
600 2.57 1.78 5.71 2.01 1.78 3.94
300 2.34 1.43 5.36 1.70 1.43 3.48
150 1.50 1.19 3.18
Altitude
(ft)
(Note 1)
Table III-1-3-3. XTT, ATT, area semi-width for en-route
phase of flight, IAF, IF FAF, MAPt AND TP fixes (NM)
Table based on availability of two DME update stations (See Note 2)
XTT ATT
En-route IAF/IF FAF/MAPt/ TP
Semiwidth
XTT ATT
Semiwidth
XTT ATT
Semiwidth
15 000 For all altitudes 2.94 2.76 5.41
14 000 4.08 3.56 8.10 2.86 2.68 5.29
13 000 2.78 2.60 5.17
12 000 2.70 2.51 5.05
11 000 2.61 2.42 4.92
10 000 2.53 2.32 4.79 2.37 2.32 4.06
9 000 2.43 2.22 4.65 2.27 2.22 3.91
8 000 2.34 2.11 4.50 2.17 2.11 3.75
7 000 2.23 2.00 4.35 2.06 2.00 3.59
6 000 2.13 1.88 4.19 1.94 1.88 3.41
5 000 2.01 1.74 4.01 1.81 1.74 3.22
4 000 1.88 1.60 3.83 1.67 1.60 3.01
3 000 1.75 1.43 3.62 1.52 1.43 2.77
2 000 1.59 1.24 3.38 1.33 1.24 2.50
1 000 1.40 0.98 3.10 1.10 0.98 2.15
500 0.95 0.81 1.92