Aircraft Operations

Chapter 4
ALTERNATIVE RNAV HOLDING ENTRIES FOR
REDUCED HOLDING ENTRY AREAS
4.1 Conventional entries described in Part I, Section 6, Chapter 1, 1.4, “Entry”, are based on the fact that for VOR
or NDB procedures, it is necessary to overfly the station or holding fix at the beginning of the entry. Such manoeuvres
require additional protection for entry procedures or a holding fix at the beginning of the entry.
4.2 With a suitable RNAV system, it is no longer necessary to overfly the station or holding waypoint. This
chapter gives an example of alternative entries which are less ‘‘space consuming’’ than the conventional ones. This
material is presented for the purpose of information to manufacturers. A date for operational use will be established in
the future.
4.3 DEFINING ENTRY SECTORS
The holding pattern is composed of two half circles and two straight segments, as shown in Figure II-6-4-1.
4.4 ENTRY MANOEUVRES
4.4.1 Sector 1 entry (see Figure II-6-4-2)
1. Turn along the arc of any arbitrary circle centred on a line between the centres of C1 and C2.
2. Intercept the inbound track of the holding pattern in the reverse direction.
3. Follow the perimeter of circle C2.
4. Continue on the tangent between C1 and C2 until the aircraft reaches circle C1.
5. Follow the perimeter of circle C1 until the aircraft reaches holding point A.
4.4.2 Sector 2 entry (see Figure II-6-4-3)
1. Overfly point A.
2. Intercept circle C2 tangentially.
3. Follow circle C2 until intercepting the inbound track.
II-6-4-1 23/11/06