(b)
by night only at Christchurch for runways 11 or 29 provided the visibility at the aerodrome is at least 16km and there is no cloud below 5000ft.
Radar Vectoring for Instrument Approach
4.16.7 An arriving aircraft will be radar vectored for an instrument approach at night, and by day when the visibility at the aerodrome of destination is less than 16km and the reported ceiling is less than 1000ft above the applicable minimum radar vectoring altitude.
4.16.8 This does not prevent a pilot requesting and being cleared for a visual approach while being vectored for an instrument approach, when the requirements for a visual approach can be met.
4.17 Radar FIS
4.17.1 When radar FIS is provided it may include:
(a)
collision hazard information; and
(b)
information to assist the pilot with navigation.
4.17.2 Radar controllers are not permittedtoofferorprovide radarterrain information in uncontrolled airspace except in an emergency.
Collision Hazard Information
4.17.3 When an unknown aircraft is observed by radar to be on a conflicting path with a radar identified aircraft, the radar controller will, whenever practicable:
(a)
warn the pilot of the identified aircraft and, if requested by the pilot or considered necessary by the controller, suggest a course of avoiding action; and
(b)
advise the pilot when the confliction no longer exists.
4.17.4 An aircraft target observed on radar is considered to represent an unknown aircraft when the radar controller is unable to relate it to any controlled flight known to be operating within the airspace concerned.
4.17.5 An unknown aircraft is considered to be on a conflicting path when, in the opinion of the radar controller, the projected aircraft tracks would reduce separation to less than 3NM.
4.17.6 Information passed to the identified aircraft to assist the pilot to sight the other aircraft will include:
(a)
its relative bearing in terms of the 12-hour clock;
(b)
its distance and apparent movement; and
(c)
if available, its unverified Mode C altitude readout.
4.17.7 The provision of this information is not intended to relieve the pilot of the responsibility to see and avoid other aircraft. It is provided to aid the pilot in visual surveillance by calling attention to a specific direction in which radar indicates possible conflicting traffic exists.
4.17.8 Notwithstanding the above, radar controllers are not required to pass information to identified aircraft concerning unknown aircraft observed on radar when:
(a)
it can reasonably be assumed that the unknown aircraft is operating within, and complying with the procedures appropriate to designated special use airspace, VFR transit lanes, or general aviation areas; or
(b)
the identified aircraft is operating in controlled airspace if it can reasonably be assumed that the unknown aircraft is operating below theairspaceconcerned.
4.18 Significant Weather Information
4.18.1 ATC radars do not display weather clutter and the radar controller is not aware of the presence of areas of adverse weather.
4.19 Emergency Action
4.19.1 In the event of an aircraft being, or appearing to be, in any form of emergency, the radar controller will afford every assistance.
4.19.2 Identification will be established as early as possible by the most suitable method consistent with ensuring the safety of the aircraft, and a suitable course of action will be agreed between the radar controller and the pilot. Where two-way RTF communication is impaired, the progress of the affected aircraft will be plotted on the radar display and identified aircraft kept clear. Position information will be passed to all ATS units that may be able to render assistance to the aircraft.
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