12.1.1 A clearance limit shall be described by specifying the name of the appropriate reporting point, or aerodrome, or controlled airspace boundary.
Note.— See Annex 11, 3.7.3.1 and associated Note.

12.1.2 When prior co-ordination has been effected with units under whose control the aircraft will subsequently come, or if there is reasonable assurance that it can be effected a reasonable time prior to their assumption of control, the clearance limit shall be the destination aerodrome or, if not practicable, an appropriate intermediate point, and co-ordination shall be expedited so that a clearance to the destination aerodrome may be issued as soon as possible.
12.1.3 If an aircraft has been cleared to an intermediate point in an adjacent control area, the appropriate area control centre will then be responsible for issuing, as soon as practi-cable, an amended clearance to the destination aerodrome.
12.1.4 When the destination aerodrome is outside a control area, the area control centre responsible for the last control area through which an aircraft will pass shall issue appropriate clearance for flight to the limit of that control area.
12.2 Route of flight

12.2.1 The route of flight shall be detailed in each clearance when deemed necessary. The phrase “cleared via flight planned route” may be used to describe any route or portion thereof, provided the route or portion thereof is identical to that filed in the flight plan and sufficient routing details are given to definitely establish the aircraft on its route. The phrases “cleared via (designation) departure” or “cleared
4/11/99
No. 3

Rules of the Air and Air Traffic Services (PANS-RAC)
via (designation) arrival” may be used when standard departure or arrival routes have been established by the appropriate ATS authority and published in Aeronautical Information Publications.
12.2.2 The phrase “cleared via flight planned route” shall not be used when granting a reclearance.
12.3 Levels
12.3.1 Instructions included in clearances relating to levels shall consist of the items specified in Part IX, 4.2.5.2.2.
13. Clearances to fly maintaining
own separation while in
visual meteorological conditions

Note 1.— As indicated in 1.1, the provision of vertical or horizontal separation by an air traffic control unit is not applicable in respect of any specified portion of a flight cleared subject to maintaining own separation and remaining in visual meteorological conditions. It is for the flight so cleared to ensure, for the duration of the clearance, that it is not operated in such proximity to other flights as to create a collision hazard.
Note 2.— It is axiomatic that a VFR flight must remain in visual meteorological conditions at all times. Accordingly, the issuance of a clearance to a VFR flight to fly subject to maintaining own separation and remaining in visual meteorological conditions has no other object than to signify that, for the duration of the clearance, the provision of separation by air traffic control is not entailed.
13.1 When so requested by an aircraft and provided it is agreed by the pilot of the other aircraft and so authorized by the appropriate ATS authority, an area control centre may clear a controlled flight operating in airspace Classes D and E in visual meteorological conditions during the hours of daylight to fly subject to maintaining own separation to one other aircraft and remaining in visual meteorological conditions. When a controlled flight is so cleared, the following shall apply:
a)  the clearance shall be for a specified portion of the flight at or below 3 050 m (10 000 ft), during climb or descent and subject to further restrictions as and when prescribed on the basis of regional air navigation agreements;
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：Rules of the Air and Air Traffic Services(44)