Page 107 - UK ATM ANS Regulations (Consolidated) 201121

Part MET - ANNEX V - Specific Requirements for the Providers of Meteorological
Services

access to suitable telecommunications facilities to:
(a) enable the exchange of operational meteorological information with other meteorological
services providers;
(b) provide the required meteorological information to the users in a timely manner.
MET.OR.110 GM1 Meteorological information exchange requirements
GENERAL
Operational meteorological information is disseminated to international OPMET databanks and the
centres for the operation of the aeronautical fixed service internet-based services.
MET.OR.110 GM2 Meteorological information exchange requirements
OPMET DATABANK
The list of relevant meteorological exchange requirements for OPMET can be found in TABLE MET II-
1, TABLE MET II-2, TABLE MET II-3, and TABLE MET II-EUR-1 of Volume II of ICAO Doc 7754
(‘EUROPEAN (EUR) AIR NAVIGATION PLAN').
MET.OR.110(a) GM1 Meteorological information exchange requirements
AREA FORECASTS - LOW-LEVEL FLIGHTS
Area forecasts for low-level flights prepared in support of the issuance of AIRMET information are
exchanged between aerodrome meteorological offices and/or meteorological watch offices
responsible for the issuance of flight documentation for low-level flights in the flight information
regions concerned.
MET.OR.115 Meteorological bulletins
The meteorological services provider responsible for the area concerned shall provide meteorological
bulletins to the relevant users, via the aeronautical fixed service or the internet.
MET.OR.120 Notification of discrepancies to the world area forecast centres (WAFC)
The meteorological services provider using WAFS SIGWX in binary universal form for the
representation of meteorological data (BUFR) code form shall notify the WAFC concerned
immediately if significant discrepancies are detected or reported in respect of WAFS SIGWX
forecasts concerning:
(a) icing, turbulence, cumulonimbus clouds that are obscured, frequent, embedded, or
occurring at a squall line, and sandstorms or dust storms;
(b) volcanic eruptions or a release of radioactive materials into the atmosphere of
significance to aircraft operations.
MET.OR.120 GM1 Notification of discrepancies to the world area forecast centres (WAFCs)
REPORTING SIGNIFICANT DISCREPANCIES
Guidance on reporting significant discrepancies is provided in ICAO Doc 8896 ‘Manual of Aeronautical
Meteorological Practice’ as last amended.
MET.OR.200 Meteorological reports and other information
(a) An aeronautical meteorological station shall disseminate:
(1) local routine reports at fixed intervals, only for dissemination at the aerodrome of
origin;
(2) local special reports, only for dissemination at the aerodrome of origin;
(3) METAR at half-hourly intervals at aerodromes serving scheduled international
commercial air transport operations for dissemination beyond the aerodrome of
origin.
(b) An aeronautical meteorological station shall inform the air traffic service units and
aeronautical information service of an aerodrome of changes in the serviceability status of
the automated equipment used for assessing runway visual range.
(c) An aeronautical meteorological station shall report to the associated air traffic services
unit, aeronautical information services unit, and meteorological watch office the
occurrence of pre- eruption volcanic activity, volcanic eruptions and volcanic ash cloud.
(d) An aeronautical meteorological station shall establish a list of criteria to provide local
special reports in consultation with the appropriate ATS units, operators and others
concerned.
MET.OR.200(a) GM1 Meteorological reports and other information
OBSERVATIONS AND REPORTS
The observations form the basis for the preparation of reports. At aerodromes, the routine
observations are supplemented by special observations whenever specified changes occur in
respect of surface wind, visibility, runway visual range, present weather, clouds and/or air
temperature.
MET.OR.200(a)(1) AMC1 Meteorological reports and other information
ROUTINE OBSERVATIONS
Meteorological stations should make routine observations throughout the 24 hours of each day or as
determined by the competent authority.
MET.OR.200(a)(2) GM1 Meteorological reports and other information
LOCAL SPECIAL REPORTS
By agreement between the aeronautical meteorological station and the appropriate ATS unit, local
special reports are not required to be disseminated in respect of:
(a) any element for which there is in the local air traffic services unit a display corresponding
to the one in the meteorological station, and where arrangements are in force for the use
of this display to update information included in local routine reports and local special
reports; and
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