Forecasters monitor volcanic eruptions as part of the Met Office’s role in the global network of nine Volcanic Ash Advisory Centres
(VAAC). Forecasts are provided every six hours giving an 18-hour prediction of where the volcanic ash cloud is and where the different
density levels of volcanic ash lie.
The Met Office forecast is used to produce a Notice to Airmen (NOTAM) that advises pilots of flight safety information. The CAA
produces a NOTAM every six hours to inform airlines and airports where ash is forecast to be and to what level of density.
The main provider of air traffic control services to aircraft flying in UK airspace, and over the eastern part of the North
Atlantic. If an aircraft under NATS’ control is approaching an area of notified ash the air traffic controller will alert the
The DfT is the UK Government department responsible for the UK’s transport network, including aviation.
Airlines have the responsibility to ensure their flights can operate safely. They can work with their aircraft and engine
manufacturers and their regulator to put together a safety case to fly in different density levels of ash.
More information about Eyjafjallajokull can be found on their website.
A specialised agency of the United Nations, ICAO was created in 1944 to promote the safe and orderly development of
international civil aviation throughout the world. It sets standards and regulations necessary for aviation safety, security,
efficiency and regularity, as well as for aviation environmental protection. The Organization serves as the forum for cooperation in
all fields of civil aviation among its 190 Member States.
An intergovernmental organisation made up of 39 Member States and the European Community. Founded in 1960, it is a civil-military
organisation that develops European air traffic control and airspace regulations and procedures.
The EC body responsible for European civil aviation regulations and also for certifying airframes and engines. It promotes the
highest common standards of safety and environmental protection in civil aviation both in Europe and worldwide.
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