4.8 Use of Radar in Control Towers
4.8.1 All control towers have the ability to display radar derived information for the benefit of aerodrome controllers, and approach controllers where the unit provides that service. Traffic displayed depends on the radar coverage in the area.
4.8.2 The aerodrome controller’s prime responsibility is visual control of traffic in the vicinity of the aerodrome. The approach controller’s responsibility is the provision of an approach control service by non-radar means to aircraft arriving, departing, and transiting the control zone and any associated control area.
4.8.3 As an adjunct to their service, aerodrome controllers and approach controllers may use radar information to:
(a) determine the position of aircraft;
(b) establish or confirm non-radar separation; and
(c) enhance traffic information.
4.8.4 While a condition of use of radar in non-radar procedures is that
aircraft are suitably identified by tower controllers, the phrase “identified” will not be used except in relation to the radar identification process that occurs as a result of the instruction “SQUAWK IDENT”.
4.8.5 All pilots should be aware that aircraft are not continuously monitored on radar by the aerodrome controller, pilots will not be advised when radar identity is lost, and a radar control service is not provided from control towers.
4.8.6 To protect IFR flights and to assist pilots of VFR flights to comply with an ATC clearance, VFR pilots may be given a suggested direction to fly. This is not a radar control service and the pilot is still responsible for remaining VFR and navigating the aircraft.
4.9 Speed Requirements Under Radar Control
4.9.1 To facilitate radar control and to reduce the need for radar vectoring, a radar controller may request aircraft to adjust speed in a specified manner. Pilots must comply with any speed instructions unless they are considered unacceptable for safety reasons, in which case ATC must be notified immediately and pilot preferred speed stated.
4.9.2 When speed control is required, it will be applied in a positive manner whereby the controller will allocate a specific speed, a maximum speed, or a minimum speed to be flown. Speed should be maintained to within 10kt of the speed required by ATC.
4.9.3 Speed control will not be applied where severe turbulence is known to exist.
4.9.4 Specific speeds will normally be expressed in multiples of 10kt, expressed as IAS, except that a minimum final approach speed may be specified in 5kt increments.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址:新西兰 AIP New Zealand ENR 1.6 RADAR SERVICE AND PROCEDURES(6)