UK Airspace WILL NOT close this time. The decision to Fly or not fly will be made by the airline provided they have an approved safety case to operate in designated ash densities.
CAA
Areas of high, medium and low density ash will be identified using information provided by the Met Offices Volcanic Ash Advisory Centre. This is based on data provided from the source of the volcano, satellite, and weather balloons, as well as ground based instrumentation such as radar
Information on the high and medium density zones will be communicated to the aviation industry by means of a Notice to Airmen (NOTAM)
Any UK airline wishing to operate in areas of medium or high density ash, will need to have a safety case approved by the CAA. Many airlines already have such safety cases in place and agreed for medium density. None has so far submitted a safety case to operate in high density ash.
A safety case sets out the measures airlines will put in place to mitigate the risk of flying through ash. They also include input from aircraft and engine manufacturers. Safety cases have been used by airlines for many years to set out how they will safely deal with other unusual or challenging issues.
