TRANSFER OF COMMUNICATION
(a)Except when separation minima based on ATS surveillance systems specified in AMC1 ATS.TR.210(c)(2), AMC6 ATS.TR.220 and point (d) of AMC7 ATS.TR.220 are being applied, the transfer of air-ground communications of an aircraft from the transferring to the accepting control unit should be made 5 minutes before the time at which the aircraft is estimated to reach the common control area boundary unless otherwise agreed between the two air traffic control units concerned.
(b)Between two air traffic services units applying separation minima based on ATS surveillance systems specified in AMC1 ATS.TR.210(c)(2), AMC6 ATS.TR.220 and point (d) of AMC7 ATS.TR.220 at the time of transfer of control, the transfer of air-ground communications of an aircraft from the transferring to the accepting control unit should be made immediately after the accepting control unit has agreed to assume control.
(c)The transfer of air-ground communications to the aerodrome air traffic controller should be effected at such a point, level, or time, that clearance to land or alternative instructions, as well as information on essential local traffic, can be issued in a timely manner.
(d)The accepting control unit should notify the transferring unit in the event that communication with the aircraft is not established as expected.
(e)In cases where a portion of a control area is so situated that the time taken by aircraft to traverse it is of a limited duration, agreement should be reached to provide for direct transfer of communication between the units responsible for the adjacent control areas, provided that the intermediate unit is fully informed of such traffic. The intermediate unit should retain responsibility for coordination and for ensuring that separation is maintained between all traffic within its area of responsibility.
(f)An aircraft may be permitted to communicate temporarily with a control unit other than the unit controlling the aircraft.