(5)
LOW ALTITUDE ALERTS (FEDERAL AVIATION ADMINISTRATION) - Air Traffic Control will issue low altitude alerts to pilots of Radar identified aircraft if the controller observes an automatic altitude report on Radar showing the aircraft to be at an altitude, which in. the controller's judgment, places the aircraft in unsafe proximity to terrain/obstructions. The provision of this service is contingent upon the capability of the controller to observe the unsafe condition. The low altitude alert will be issued as follows: "Tall 01, low altitude alert, check your altitude immediately."
c. RADAR ASSISTANCE TO VFR AIRCRAFT
(1)
Radar equipped Federal Aviation Administration and USAF Air Traffic Control facilities provide Radar assistance and navigation service (vectors) to VFR aircraft provided the aircraft can communicate with the facility, are within Radar coverage, and can be Radar identified.
(2)
Pilots should clearly understand that authorization to proceed in accordance with such Radar navigational assistance does not constitute authorization for the pilot to violate Federal Air Regulations. In effect, assistance provided is on the basis that navigational guidance information issued is advisory in nature and the responsibility of flying the aircraft safely, remains with the pilot.
(3)
In many cases, the controller will be unable to determine if flight into instrument conditions will result from his instructions. To avoid possible hazards resulting from being vectored into IFR conditions, pilots should keep the controller advised of the weather conditions in which he is operating and along the course ahead. Controllers will vector VFR aircraft only when one of the following conditions exist.
(a)
The controller suggests the vector and the pilot concurs.
(b)
A special program has been established and vectoring service has been advertised.
(c)
In the controller's judgment the vector is necessary for air safety.
(d) The pilot requests the vector.
(4)
Radar navigation assistance (vectors) and other Radar derived information may be provided in response to pilot requests. Pilots should understand, however, that provision of service under these conditions is not mandatory. It depends on whether the controller can fit it in along with higher priority duties. Many factors, such as limitations of Radar, volume of traffic, communications frequency congestion, and controller workload could prevent the controller from providing it. The controller has complete discretion for determining if he is able to provide the service in a particular case. His decision not to provide the service in a particular case is not subject to question.
d. TERMINAL RADAR PROGRAMS FOR VFR AIRCRAFT
(1) BASIC RADAR SERVICE FOR VFR AIRCRAFT
(a)
Basic Radar service provides traffic information and limited vectoring to VFR aircraft on a work load permitting basis.
(b)
Vectoring service may be provided when requested by the pilot or with pilot concurrence when suggested by Air Traffic Control.
(c)
Pilots of arriving aircraft should contact Approach Control on the publicized frequency listed in the IFR Supplement, give their position, altitude, Radar beacon code (if transponder equipped), destination and request traffic information.
(d)
Approach Control will issue wind and runway, except when the pilot states "HAVE NUMBERS" or this information is contained in the Automatic Terminal Information Service broadcast and the pilot indicates he has received the Automatic Terminal Information Service information. Traffic information is provided on a workload permitting basis. Approach Control will specify the time or place at which the pilot is to contact the tower on local control frequency for further landing information. Upon being told to contact the tower, Radar service is automatically terminated.
(2) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：FLIGHT INFORMATION PUBLICATION GENERAL PLANNING(155)
