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d) individual ATIS messages shall be identified by a
4.3.4.7 Recommendation.- Where Voice-ATIS broad- designator in the form of a letter of the ICAO spelling
casts are available in more than one language, a discrete alphabet. Designators assigned to consecutive ATIS
channel should be used for each language. messages shall be in alphabetical order;
4.3.4.8 Recommendation.- The Voice-ATIS broadcast
message should, whenever practicable, not exceed 30 seconds,
care being taken that the readability of the ATZS message is
not impaired by the speed of the transmission or by the
identijkation signal of a navigation aid used for transmission
of ATIS. The ATIS broadcast message should take into
consideration human performance.
Note.- Guidance material on human performance can be
found in the Human Factors Training Manual (Doc 9683).
e) aircraft shall acknowledge receipt of the information
upon establishing communication with the ATS unit
providing approach control service or the aerodrome
control tower, as appropriate;
f) the appropriate ATS unit shall, when replying to the
message in e) above or, in the case of arriving aircraft,
at such other time as may be prescribed by the
appropriate ATS authority, provide the aircraft with the
current altimeter setting; and
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Chapter 4 Annex I1 - Air Traffic Services
g) the meteorological information shall be extracted from h) significant runway surface conditions and, if appropriate,
the local meteorological routine or special report. braking action;
Note.- In accordance with Sections 4.1 and 4.3 of Appendix
3 to Annex 3, the surface wind direction and speed and
runway visual range (RVR) are to be averaged over 2 minutes
and 1 minute, respectively; and the wind information is to
refer to conditions along the runway for departing aircrafi and
to conditions at the touchdown zone for arriving aircrafi. A
template for the local meteorological report, including the
corresponding ranges and resolutions of each element, are in
Appendix 3 to Annex 3. Additional criteria for the local
meteorological report are contained in Chapter 4 of, and in
Attachment D to. Annex 3.
4.3.6.2 When rapidly changing meteorological conditions
make it inadvisable to include a weather report in the ATIS, the
ATIS messages shall indicate that the relevant weather information
will be given on initial contact with the appropriate
ATS unit.
4.3.6.3 Information contained in a current ATIS, the
receipt of which has been acknowledged by the aircraft
concerned, need not be included in a directed transmission to
the aircraft, with the exception of the altimeter setting, which
shall be provided in accordance with 4.3.6.1 9.
holding delay, if appropriate;
transition level, if applicable;
other essential operational information;
surface wind direction and speed, including significant
variations and, if surface wind sensors related specifically
to the sections of runway@) in use are available
and the information is required by operators, the indication
of the runway and the section of the runway to
which the information refers;
visibility and, when applicable, RVR;
present weather;
cloud below 1 500 m (5 000 ft) or below the highest
minimum sector altitude, whichever is greater; cumulonimbus;
if the sky is obscured, vertical visibility
when available;
air temperature;
4.3.6.4 If an aircraft acknowledges receipt of an ATIS tq) dew point temperature;
that is no longer current, any element of information that needs
updating shall be transmitted to the aircraft without delay. r) altimeter setting(s);
4.3.6.5 Recommendation.- Contents of ATIS should be
s) any available information on significant meteorological
kept as brief as possible. Information additional to that phenomena in the approach and climb-out areas includspecified
in 4.3.7 to 4.3.9, for example information already ing wind shear, and information on recent weather of
available in aeronautical information publications (Alps) and operational significance;
NOTAM, should only be included when justified in exceptional
circumstances. t) trend forecast, when available; and
4.3.7 ATIS for arriving and
departing aircraft
u) specific ATIS instructions.
4.3.8 ATIS for arriving aircraft
ATIS messages containing both arrival and departure information
shall contain the following elements of information in ATIS messages containing arrival only shall
the order listed: contain the following elements of information in the order
listed:
a) name of aerodrome;
b) arrival and/or departure indicator;
c) contract type, if communication is via D-ATIS;
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