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

Part III — Section 3, Chapter 2 III-3-2-7
2.4.2 Intermediate approach length
2.4.2.1 The intermediate segment may consist of two components:
a) a turning component (where used) abeam the intermediate waypoint; followed by
b) a straight component immediately before the final approach waypoint.
2.4.2.2 The length of the straight component is variable but will not be less than 3.70 km (2.00 NM). This allows
the aircraft to be stabilized prior to overflying the final approach waypoint. The length of the turning component is the
minimum stabilization distance for the turn angle at the IF and can be determined from Section 2, Chapter 1,
Table III-2-1-3 or III-2-1-9.
2.4.3 Intermediate approach area width
The total area width results from joining the area widths at the IF and the FAF. The principle of secondary areas
applies. For area widths see 2.1.4, “Area widths”.
2.4.4 Protection of turns at the FAF
Where a turn at the FAF is greater than 10°, the area should be widened as in 2.3.2 and 2.3.4 using a wind spiral based
on the maximum final approach speed.
2.5 TURNING MISSED APPROACH
2.5.1 The general criteria in Part I, Section 4, Chapter 6, 6.4.2, “General” and 6.4.3, “Turn parameters” apply, as
does Part 1, Section 1, Chapter 3, “Turn area construction”. See also sections 6.4.6, “Turn initiated at a designated
turning point (TP)” and 6.4.7, “Turn specified at the MAPt”.
2.5.2 A missed approach with a turn at the MAPt for VOR/DME and DME/DME is shown in Figure III-3-2-5. A
missed approach with a turn at the MAPt for basic GNSS is shown in Figure III-3-2-12.
2.6 END OF THE MISSED APPROACH SEGMENT — MAHF
A waypoint (MAHF) defining the end of the missed approach segment shall be located at or after the point where the
aircraft, climbing at the minimum prescribed gradient for each segment, reaches the minimum altitude for en route or
holding, whichever is appropriate.
23/11/06