AMC1 ATS.TR.155(c)(3) ATS surveillance services
ED Decision 2020/008/R
VECTORING
INSTRUCTIONS IN AIR TRAFFIC CONTROL SERVICE PROVISION — GENERAL
(a) When vectoring an aircraft, an air traffic controller should comply with the following:
(1) when an aircraft is given its initial vector diverting it from a previously assigned route, the pilot should be informed what the vector is to accomplish, and, the limit of the vector should be specified when the assigned heading is such that a loss of communications may result in a safety risk (e.g. to ... position, for ... approach);
(2) except when transfer of control is to be effected, aircraft should not be vectored closer than 4.6 km (2.5 NM) or, where the minimum permissible separation is greater than 9.3 km (5 NM), a distance equivalent to one-half of the prescribed separation minimum, from the limit of the airspace for which the air traffic controller is responsible, unless local arrangements have been made to ensure that separation will exist with aircraft operating in adjoining areas;
(3) controlled flights should not be vectored into uncontrolled airspace except in the case of emergency or in order to circumnavigate adverse meteorological conditions (in which case the pilot should be so informed), or at the specific request of the pilot; and
(4) when an aircraft has reported unreliable directional instruments, the pilot should be requested, prior to the issuance of manoeuvring instructions, to make all turns at an agreed rate and to carry out the instructions immediately upon receipt.
(b) Special VFR flights should not be vectored unless special circumstances, such as emergencies, dictate otherwise.
(c) In terminating vectoring of an aircraft, the air traffic controller should instruct the pilot to resume own navigation, giving the pilot the aircraft’s position and appropriate instructions, as necessary, in the form prescribed in point (b)(2) of AMC1 ATS.TR.155(c)(2), if the current instructions had diverted the aircraft from a previously assigned route.
Air traffic controllers must inform pilots of vectoring purposes and limits, especially if communication loss poses risks. Aircraft should maintain safe distances from airspace boundaries unless coordinated otherwise. Vectoring into uncontrolled airspace is prohibited except for emergencies, weather avoidance, or pilot request. Unreliable directional instruments require agreed turn rates. Terminating vectors requires resuming own navigation instructions.
* Summary by Aviation.Bot - Always consult the original document for the most accurate information.
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