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c) contract type, if communication is via D-ATIS;
d) designator;
e) time of observation, if appropriate;
f) runway(s) to be used for take-off; status of arresting
system constituting a potential hazard, if any;
g) significant surface conditions of runway(s) to be used
for take-off and, if appropriate, braking action;
h) departure delay, if appropriate;
i) transition level, if applicable;
j) other essential operational information;
k) surface wind direction and speed, including significant
variations and, if surface wind sensors related specifically
to the sections of runway(s) 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;
*l) visibility and, when applicable, RVR;
*m) present weather;
*n) 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;
o) air temperature;
†p) dew point temperature;
q) altimeter setting(s);
r) any available information on significant meteorological
phenomena in the climb-out area including wind shear;
s) trend forecast, when available; and
t) specific ATIS instructions.
4.3.10 Use of the OFIS messages in directed
request/reply transmissions
When requested by the pilot, the applicable OFIS message(s)
shall be transmitted by the appropriate ATS unit.
* These elements are replaced by the term “CAVOK”, whenever the
conditions as specified in the PANS-ATM (Doc 4444), Chapter 11
prevail.
† As determined on the basis of regional air navigation agreements.
Chapter 4 Annex 11 — Air Traffic Services
4-7 1/11/01
4.4 VOLMET broadcasts and
D-VOLMET service
4.4.1 Recommendation.— HF and/or VHF VOLMET
broadcasts and/or D-VOLMET service should be provided when
it has been determined by regional air navigation agreements
that a requirement exists.
Note.— Annex 3, 11.5 and 11.6 provide details of VOLMET
broadcasts and D-VOLMET service.
4.4.2 Recommendation.— VOLMET broadcasts should
use standard radiotelephony phraseologies.
Note.— Guidance on standard radiotelephony phraseologies
to be used in VOLMET broadcasts is given in the Manual
on Coordination between Air Traffic Services, Aeronautical
Information Services and Aeronautical Meteorological Services
(Doc 9377), Appendix 1.
ANNEX 11 5-1 1/11/01
CHAPTER 5. ALERTING SERVICE
5.1 Application
5.1.1 Alerting service shall be provided:
a) for all aircraft provided with air traffic control service;
b) in so far as practicable, to all other aircraft having filed
a flight plan or otherwise known to the air traffic
services; and
c) to any aircraft known or believed to be the subject of
unlawful interference.
5.1.2 Flight information centres or area control centres
shall serve as the central point for collecting all information
relevant to a state of emergency of an aircraft operating within
the flight information region or control area concerned and
for forwarding such information to the appropriate rescue
coordination centre.
5.1.3 In the event of a state of emergency arising to an
aircraft while it is under the control of an aerodrome control
tower or approach control unit, such unit shall notify immediately
the flight information centre or area control centre
responsible which shall in turn notify the rescue coordination
centre, except that notification of the area control centre, flight
information centre, or rescue coordination centre shall not be
required when the nature of the emergency is such that the
notification would be superfluous.
5.1.3.1 Nevertheless, whenever the urgency of the situation
so requires, the aerodrome control tower or approach control
unit responsible shall first alert and take other necessary steps
to set in motion all appropriate local rescue and emergency
organizations which can give the immediate assistance
required.
5.2 Notification of rescue
coordination centres
5.2.1 Without prejudice to any other circumstances that
may render such notification advisable, air traffic services
units shall, except as prescribed in 5.5.1, notify rescue coordination
centres immediately an aircraft is considered to be in a
state of emergency in accordance with the following:
a) Uncertainty phase when:
1) no communication has been received from an aircraft
within a period of thirty minutes after the time a
communication should have been received, or from
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