4.2.5.2.2 Instructions included in clearances relating to levels shall consist of:
a) cruising level(s) or, for cruise climb, a range of levels, and, if necessary, the point to which the clear-ance is valid with regard to the level(s);
7/11/96
Rules of the Air and Air Traffic Services (PANS-RAC)
Note.— See 4.2.5.2.1 d) above and associated Note.
b) levels at which specified significant points are to be crossed, when necessary;
c) the place or time for starting climb or descent, when necessary;
d) the rate of climb or descent, when necessary;
e) detailed instructions concerning departure or approach levels, when necessary.
4.2.5.2.3 It is the responsibility of the aeronautical station or aircraft operator who has received the clearance to transmit it to the aircraft at the specified or expected delivery time, and to notify the air traffic control unit promptly if it is not delivered within a specified period of time.
4.2.5.2.4 Personnel receiving clearances for transmission to aircraft shall transmit such clearances in the exact phraseology in which they are received. In those cases where the personnel transmitting the clearances to the aircraft do not form part of the air traffic services, it is essential that appropriate arrangements be made to meet this requirement.
4.2.5.3 Transfer of control messages
Note.— The provisions governing transfer of control are contained in Annex 11, 3.6.2, and in Part VIII of this document. Phraseology to be used in voice communications is contained in Part X, 3.5, of this document. Format and data conventions for automated interchange of transfer of control messages have not yet been developed.
4.2.5.4 Flow control messages
Note 1.— Provisions governing the control of air traffic flow are set forth in Annex 11, 3.7.4 and in Part II, Section 11, of this document. Attention is drawn, however, to the guidance material contained in the Air Traffic Services Planning Manual (Doc 9426) regarding flow control.
Note 2.— Format and data conventions for automated interchange of flow control messages have not yet been developed.
4.2.5.5 Position report and air-report messages
Note.— Provisions governing position reporting are set forth in Annex 2, 3.6.3 and 5.3.3, and in Part II, Sections 14 and 15, of this document.
IX. Air Traffic Services Messages
4.2.5.5.1 The format and data conventions to be used in position report and air-report messages are those specified on the model AIREP/AIREP SPECIAL form at Appendix 1, using:
—
for position-report messages: Section 1;
—
for air-report messages: Section 1 followed by Sections 2 and/or 3 as relevant.
4.2.5.5.2 Where special air-report messages transmitted by voice communications are subsequently fowarded by automatic data processing equipment which cannot accept the special air-report message type designator ARS, the use of a different message-type designator shall be permitted by regional air navigation agreement and should be reflected in the Regional Supplementary Procedures (Doc 7030) provided that:
a) the data transmitted accord with that specified in the special air-report format; and
b) measures are taken to ensure that special air-report messages are forwarded to the appropriate meteo-rological unit and to other aircraft likely to be affected.
4.3 Flight information messages
4.3.1 Messages containing traffic information
Note.— Provisions governing the issuance of traffic information are set forth in Annex 11, 4.2.2 b) and Notes 1 and 2 and in Part III, Section 14, and Part V, Section 7, of this document.
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