Page 110 - UK ATM ANS Regulations (Consolidated) 201121

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

MET.OR.215(d) GM2 Forecasts and other information
PRE-FLIGHT PLANNING
The service for pre-flight planning should be confined to flights originating within the territory of the
State concerned.
MET.OR.215(d) GM3 Forecasts and other information
FLIGHT DOCUMENTATION
'Flight documentation', for the purpose of meteorology, is understood as being documents, including
charts or forms, containing meteorological information for a flight.
MET.OR.215(e) AMC1 Forecasts and other information
CLIMATOLOGICAL INFORMATION
The aerodrome meteorological office should make available such climatological tables within a time
period as agreed between the competent authority and the relevant user.
MET.OR.215(f) AMC1 Forecasts and other information
AIS NOTAM/ASHTAM AND AIC
The aerodrome meteorological office should provide the relevant aeronautical information service
provider with meteorological information:
(a) necessary for the preparation of NOTAM or ASHTAM, including, in particular, information
on the establishment, withdrawal and significant changes in operation of aeronautical
meteorological services sufficiently in advance of the effective date to permit issuance of
NOTAM; and
(b) necessary for the preparation of aeronautical information circulars, including, in particular,
meteorological information on expected important changes in aeronautical meteorological
procedures, services and facilities provided.
MET.OR.215(g) AMC1 Forecasts and other information
SEARCH AND RESCUE
To facilitate search and rescue operations, the aerodrome meteorological office or meteorological
watch office should provide:
(a) complete and detailed meteorological information on the current and forecast
meteorological conditions in the search area;
(b) current and forecast conditions en-route, covering flights by search aircraft from and
returning to the aerodrome from which the search is being conducted; and
(c) on request from the rescue coordination centre, meteorological information required by
ships undertaking search and rescue operations.
MET.OR.220 Aerodrome forecasts
(a) An aerodrome meteorological office shall issue aerodrome forecasts as a TAF at a
specified time.
(b) When issuing TAF, the aerodrome meteorological office shall ensure that not more than
one TAF is valid at an aerodrome at any given time.
MET.OR.220(a) GM1 Aerodrome forecasts
DISSEMINATION OF TAF
TAF and amendments thereto are disseminated to international OPMET databanks and the centres
designated for the operation of the aeronautical fixed service internet-based services.
MET.OR.225 Forecasts for landing
(a) An aerodrome meteorological office shall prepare forecasts for landing as determined by
the competent authority.
(b) This forecast for landing shall be issued in the form of a TREND forecast.
(c) The period of validity of a TREND forecast shall be 2 hours from the time of the report
which forms part of the landing forecast.
MET.OR.225 GM1 Forecasts for landing
RANGE
Landing forecasts are intended to meet the requirements of local users and of aircraft within about
one hour's flying time from the aerodrome.
MET.OR.225(a) GM1 Forecasts for landing
PREPARATION
As all the aerodromes do not need to be provided with forecasts for landing, the competent authority
determines on which aerodromes these types of forecasts will be provided by the aerodrome
meteorological office.
MET.OR.225(b) GM1 Forecasts for landing
TREND FORECAST
A TREND forecast is understood as being a concise statement of the expected significant changes in
the meteorological conditions at that aerodrome to be appended to a METAR, and if agreed between
the aeronautical meteorological station and the appropriate ATS unit as well in a local routine report
and local special report.
MET.OR.230 Forecasts for take-off
An aerodrome meteorological office shall:
(a) prepare forecasts for take-off as determined by the competent authority;
(b) supply forecasts for take-off to operators and flight crew members on request within the 3
hours before the expected time of departure.
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