How the UK complies with international standards relating to the inspection of aeronautical meteorological stations
ICAO requires States to conduct inspections of its aeronautical meteorological stations at sufficiently frequent intervals to ensure that a high standard of observation is maintained, that instruments and all their indicators are functioning correctly, and that the exposure of the instruments has not changed significantly.
There is also a need to ensure that the aeronautical met observations provided for civil aviation are accurate, timely and coded correctly, in line with international standards.
Met observing covers the following aspects:
ICAO Annex 3 provides standards and recommended practices relating to met observing and these are included within the requirements laid down in CAP 746, Meteorological Observations at Aerodromes, which is edited by the Met Authority. CAP 746 further requires ongoing competence of the Met observer, to ensure that the most up to date observing techniques and latest coding are used.