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b) dependent parallel approaches; or
c) segregated parallel operations.
6.7.3.1.2 Whenever parallel approaches are carried out,
separate radar controllers should be responsible for the
sequencing and spacing of arriving aircraft to each runway.
6.7.3.2 REQUIREMENTS AND PROCEDURES FOR
INDEPENDENT PARALLEL APPROACHES
6.7.3.2.1 Independent parallel approaches may be
conducted to parallel runways provided that:
a) the runway centre lines are spaced by the distance
specified in Annex 14, Volume I; and
1) where runway centre lines are spaced by less than
1 310 m but not less than 1 035 m, suitable
secondary surveillance radar (SSR) equipment,
with a minimum azimuth accuracy of 0.06 degrees
(one sigma), an update * In preparation. period of 2.5 seconds or
Chapter 6. Visual Separation in the Vicinity of Aerodromes 6-9
1/11/01
less and a high resolution display providing
position prediction and deviation alert, is available;
or
2) where runway centre lines are spaced by less than
1 525 m but not less than 1 310 m, SSR equipment
with performance specifications other than the
foregoing may be applied, provided they are equal
to or better than those stated under 3) below, and
when it is determined that the safety of aircraft
operation would not be adversely affected; or
3) where runway centre lines are spaced by 1 525 m
or more, suitable surveillance radar with a minimum
azimuth accuracy of 0.3 degrees (one sigma)
or better and update period of 5 seconds or less is
available;
b) instrument landing system (ILS) and/or microwave
landing system (MLS) approaches are being conducted
on both runways;
c) the missed approach track for one approach diverges
by at least 30 degrees from the missed approach track
of the adjacent approach;
d) an obstacle survey and evaluation is completed, as
appropriate, for the areas adjacent to the final approach
segments;
e) aircraft are advised of the runway identification and
ILS localizer or MLS frequency as early as possible;
f) radar vectoring is used to intercept the ILS localizer
course or the MLS final approach track;
g) a no-transgression zone (NTZ) at least 610 m (2 00 0ft)
wide is established equidistant between extended
runway centre lines and is depicted on the radar
display;
h) separate radar controllers monitor the approaches to
each runway and ensure that when the 300 m (1 000 ft)
vertical separation is reduced:
1) aircraft do not penetrate the depicted NTZ; and
2) the applicable minimum longitudinal separation
between aircraft on the same ILS localizer course
or MLS final approach track is maintained; and
i) if no dedicated radio channels are available for the
radar controllers to control the aircraft until landing:
1) transfer of communication of aircraft to the
respective aerodrome controller’s frequency is effected
before the higher of two aircraft on adjacent
final approach tracks intercepts the ILS glide path or
the specified MLS elevation angle; and
2) the radar controllers monitoring the approaches to
each runway are provided with the capability to
override transmissions of aerodrome control on the
respective radio channels for each arrival flow.
6.7.3.2.2 As early as practicable after an aircraft has
established communication with approach control, the aircraft
shall be advised that independent parallel approaches are in
force. This information may be provided through the ATIS
broadcasts.
6.7.3.2.3 When vectoring to intercept the ILS localizer
course or MLS final approach track, the final vector shall
enable the aircraft to intercept the ILS localizer course or MLS
final approach track at an angle not greater than 30 degrees
and to provide at least 2 km (1.0 NM) straight and level flight
prior to ILS localizer course or MLS final approach track
intercept. The vector shall also enable the aircraft to be
established on the ILS localizer course or MLS final approach
track in level flight for at least 3.7 km (2.0 NM) prior to
intercepting the ILS glide path or specified MLS elevation
angle.
6.7.3.2.4 A minimum of 300 m (1 000 ft) vertical
separation or, subject to radar system and radar display
capabilities, a minimum of 5.6 km (3.0 NM) radar separation
shall be provided until aircraft are established:
a) inbound on the ILS localizer course and/or MLS final
approach track; and
b) within the normal operating zone (NOZ).
6.7.3.2.5 Subject to radar and display system capabilities,
a minimum of 5.6 km (3.0 NM) radar separation shall be
provided between aircraft on the same ILS localizer course or
　
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