Aviation Mr. Scott To ask the Secretary of State for Transport what assessment he has made of the effect of plans by the National Air Traffic Services for new holding stacks for aircraft in relation to flights from (a) Stansted, (b) Luton and (c) City airport. Gillian Merron No definitive plans have been submitted by NATS for new holding stacks for aircraft in relation to flights from (a) Stansted, (b) Luton and (c) London City airport. Plans for such changes, following full consultation by NATS as the change sponsor, would be submitted to and assessed by the independent aviation regulator, the Civil Aviation Authority, in accordance with the Airspace Change Process: www.caa.co.uk/docs/33/CAP725.PDF