The airborne part of the work-up starts with practices of the sequence at a base height of 5000ft, which is the normal minimum height that all Typhoon pilots can perform aerobatics. These flights are usually flown using straight line features such as coastlines, roads or runways in the local area surrounding RAF Coningsby. The full sequence must be flown at least twice before the work-up (or down in effect) continues. Following successful completion of the 5000ft display practices the sequence is approved by TFC and the Display Pilot conducts a check flight with their Supervisor. They are then subsequently cleared to practice below 5000ft and moves their work-up to overhead RAF Coningsby, The work-up continues progressively stepping down base heights from 1500ft to 500ft. A predefined number of practises at each height is to be achieved. At the final display height of 500ft, level turns and flypasts can also be conducted at 300ft and 100ft respectively.