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rescue. operations the. designated meteorological office should,
on request, supply:
a) complete and detailed information on the current and
forecast meteorological conditions in the search area;
and
b) current and forecast conditions en route, covering
flights by search aircraji from and returning to the
aerodrome from which the search is being conducted.
2.2.3 Recommendation, On request from the rescue
coordination centre, the designated meteorological office
should supply or awange for the supply of meteorological
information required by ships undertaking search and rescue
operations.
2511 1/04 APP 9-2
Appendix 9 Annex 3 - Meteorological Service for International Air Navigation
3. INFORMATION TO BE PROVIDED
FOR AERONAUTICAL INFORMATION
SERVICES UNITS
3.1 List of information
The following information shall be supplied, as necessary, to
an aeronautical information services unit:
a) information on meteorological service for international
air navigation, intended for inclusion in the aeronautical
information publication(s) concerned;
Note.- Details of this information are given in
Annex 15, Appendix I , Part I , 3.5 and Part 3, 2.2, 2.11, 3.2
and 3.11.
b) information necessary for the preparation of NOTAM or
ASHTAM including, in particular, information on:
1) the establishment, withdrawal and significant
changes in operation of aeronautical meteorological
services. This information is required to be provided
to the aeronautical information services unit
sufficiently in advance of the effective date to permit
issuance of NOTAM in compliance with Annex 15,
5.1.1 and 5.1.1.1;
2) the occurrence of volcanic activity; and
Note.- The specific information required is given in
Chapter 3, 3.3.2 and Chapter 4, 4.8.
3) accidental release of radioactive materials into the
atmosphere, as agreed between the meteorological
and appropriate civil aviation authorities concerned;
and
Note.- The specific information required is given in
Chapter 3, 3.4.2 g).
c) information necessary for the preparation of aeronautical
information circulars including, in particular, information
on:
1) expected important changes in aeronautical meteorological
procedures, services and facilities provided;
and
2) effect of certain weather phenomena on aircraft
operations.
APP 9-3
APPENDIX 10. TECHNICAL SPECIFICATIONS RELATED TO
REQUIREMENTS FOR AND USE OF COMMUNICATIONS
(See Chapter 11 of this Annex.)
1. SPECIFIC REQUIREMENTS FOR
COMMUNICATIONS
1.1 Required transit times of
meteorological information
Recommendation.-. Unless otherwise determined by
regional air navigation agreement, AFiW messages and bulletins
containing operational meteorological information
should achieve transit times of less than the following:
SIGMET and AIRMET messages, volcanic ash
and tropical cyclone advisory infonnation
and special air-reports . . . . . . . . . . . . . . . . . . . . . 5 minutes
Abbreviatedplain-language amendments to
significant weather and upper air forecasts. .... 5 minutes
Amended TAF and
corrections to TAF ........................ 5 minutes
METAR
Trend forecasts
TAF
0-900 km
(500 NM). ........ 5 minutes
mom than
900 km
(500 NM). ........ 10 minutes
1.2 Grid point data for ATS and operators
1.2.1 Recommendation.- When upper-air data for grid
points in digital form are made available for use by air trafic
services computers, the transmission arrangements should be
as agreed between the meteorological authority and the
appropriate ATS authority
1.2.2 Recommendation.- When upper-air data for grid
points in digital form are made available to operators for
flight planning by computer the transmission arrangements
should be as agreed among the world area forecast centre
concerned, the meteorological authority and the operators.
2. USE OF AERONAUTICAL FIXED
SERVICE COMMUNICATIONS
2.1 Meteorological bulletins in
alphanumeric format
2.1.1 Composition of bulletins
Recommendation.- Whenever possible, exchanges of
operational meteorological information should be made in
consolidated bulletins of the same types of meteorological
infonnation.
2.1.2 Filing times of bulletins
Recommendation.- Meteorological bulletins required for
scheduled transmissions should be filed regularly and at the
prescribed scheduled times. METAR should be filed for
transmission not later than 5 minutes ajer the actual time of
observation. TAF should be filed for transmission at least one
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