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message type designator
aircraft identification
Chapter 4. General Provisions for Air Traffic Services 4-13
1/11/01
Data block 1:
latitude
longitude
pressure-altitude
time
Data block 2:
wind direction
wind speed
temperature
turbulence (if available)
humidity (if available)
Data block 3:
Condition prompting the issuance of the special air-report;
to be selected from the list a) to k) presented under
4.12.3.1.
4.12.3.3 When voice communications are used, special
air-reports shall contain the following elements:
Message type designator
Section 1.— Position information
1) aircraft identification
2) position
3) time
4) flight level or altitude
Section 3.— Meteorological information
5) Condition prompting the issuance of the special airreport,
to be selected from the list a) to k) presented
under 4.12.3.1.
4.12.4 Compilation and transmission of air-reports
by voice communications
4.12.4.1 Forms based on the model AIREP/AIREP
SPECIAL form at Appendix 1 shall be provided for the use of
flight crews in compiling the reports. The detailed instructions
for reporting, as given at Appendix 1, shall be complied with.
4.12.4.2 The detailed instructions, including the formats
of messages and the phraseologies given at Appendix 1, shall
be used by flight crews when transmitting air-reports and by
air traffic services units when retransmitting such reports.
Note.— Increasing use of air-reports in automated systems
makes it essential that the elements of such reports be
transmitted in the order and form prescribed.
4.12.5 Recording of special air-reports
of volcanic activity
Special air-reports containing observations of volcanic activity
shall be recorded on the special air-report of volcanic activity
form. Forms based on the model form for special air-reports of
volcanic activity at Appendix 1 shall be provided for flight
crews operating on routes which could be affected by volcanic
ash clouds.
Note.— The recording and reporting instructions may
conveniently be printed on the back of the special air-report of
volcanic activity form.
4.12.6 Forwarding of meteorological information
4.12.6.1 When receiving ADS reports which contain a
meteorological information block, air traffic services units
shall relay the basic ADS and meteorological information
blocks without delay to the world area forecast centres
(WAFCs) and, as appropriate, to regional area forecast centres
(RAFCs).
4.12.6.2 When receiving special air-reports by data link
communications, air traffic services units shall forward them
without delay to their associated meteorological watch office,
the WAFCs and, as appropriate, to RAFCs.
4.12.6.3 When receiving air-reports by voice communications,
air traffic services units shall forward them without
delay to their associated meteorological watch offices. In the
case of routine air-reports which contain a Section 3, the air
traffic services unit shall forward Section 1, sub-items 1 to 3
and Section 3.
4.13 PRESENTATION AND UPDATING OF
FLIGHT PLAN AND CONTROL DATA
4.13.1 General
The appropriate authority shall establish provisions and
procedures for the presentation to controllers, and subsequent
updating, of flight plan and control data for all flights being
4-14 Air Traffic Management (PANS-ATM)
1/11/01
provided with a service by an ATS unit. Provision shall also be
made for the presentation of any other information required or
desirable for the provision of ATS.
4.13.2 Information and data to be presented
4.13.2.1 Sufficient information and data shall be
presented in such a manner as to enable the controller to have
a complete representation of the current air traffic situation
within the controller’s area of responsibility and, when
relevant, movements on the manoeuvring area of aerodromes.
The presentation shall be updated in accordance with the
progress of aircraft, in order to facilitate the timely detection
and resolution of conflicts as well as to facilitate and provide
a record of coordination with adjacent ATS units and control
sectors.
4.13.2.2 An appropriate representation of the airspace
configuration, including significant points and information
related to such points, shall be provided. Data to be presented
shall include relevant information from flight plans and
position reports as well as clearance and coordination data.
The information display may be generated and updated
automatically, or the data may be entered and updated by
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