Rules of the Air and Air Traffic Services(98)

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modification messages

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flight plan cancellation messages

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departure messages

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arrival messages;

b)  co-ordination messages (FF), including:
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current flight plan messages

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estimate messages

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co-ordination messages

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acceptance messages

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logical acknowledgement messages;

c)  supplementary messages (FF), including:
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request flight plan messages

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request supplementary flight plan messages

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supplementary flight plan messages;

d)  control messages (FF), including:
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clearance messages

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transfer of control messages

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flow control messages

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position report and air-report messages.

1.4 Flight information messages

This category comprises:
a)  messages containing traffic information (FF);
b)  messages containing meteorological information (FF or GG);
c)  messages concerning the operation of aeronautical facilities (GG);
d)  messages containing essential aerodrome information (GG);
e)  messages concerning air traffic incident reports (FF).

1.5 When justified by the requirement for special handling, messages in the fixed service should be assigned the Priority Indicator DD in place of the normal Priority Indicator.
PANS-RAC (Doc 4444)  9-1
2. General provisions

Note.— The use in this Part of expressions such as “originated”, “transmitted”, “addressed” or “received” does not necessarily imply that reference is made to a teletypewriter or digital data interchange for a computer-to-computer message. Except where specifically indicated, the messages described in this Part may also be transmitted by voice, in which case the four terms above represent “initiated”, “spoken by”, “spoken to” and “listened to” respectively.
2.1 Origination and addressing of messages

2.1.1 General
Note.— Movement messages in this context comprise flight plan messages, departure messages, delay messages, arrival messages, cancellation messages and position report messages and modification messages relevant thereto.
2.1.1.1 Messages for air traffic services purposes shall be originated by the appropriate air traffic services units or by aircraft as specified in Section 3, except that, through special local arrangements, air traffic services units may delegate the responsibility for originating movement messages to the pilot, the operator, or his designated representative.
2.1.1.2 Origination of movement, control and flight information messages for purposes other than air traffic services (e.g. operational control) shall, except as provided for in Annex 11, 2.15, be the responsibility of the pilot, the operator, or a designated representative.
2.1.1.3 Flight plan messages, amendment messages related thereto and flight plan cancellation messages shall, except as provided in 2.1.1.4, be addressed only to those air traffic services units which are specified in the provisions of
4.2. Such messages shall be made available to other air traffic services units concerned, or to specified positions within such units and to any other addressees of the messages, in accordance with local arrangements.
2.1.1.4 When so requested by the operator concerned, emergency and movement messages which are to be transmitted simultaneously to air traffic services units concerned, shall also be addressed to:
a)  one addressee at the destination aerodrome or departure aerodrome, and
　
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