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Freedom of Information response to information concerning volcanic ash flow and safe access by commercial aircraft to UK airspace. The requester asked that this include:
any conditions, directions, instructions, plans policies or guidance intended or given by the CAA to NATS
what NATS had or intended to do regarding flow rates or the provision of instrument flight rule air traffic services
what is required for NATS to change its position on any flow rate restriction or withdraw and suspend instrument flight rule air traffic services