21.   Winter had wanted to introduce a budgetary control system based on monthly management accounts with the emphasis on key figures.

22.   The study says there must be a complete overhaul of air traffic control systems.

23.   The volume of scheduled flights is straining the air traffic control system.

24.   Analysts fear the overstretched air traffic control system could reach breaking point.

25.   Reviewing the progress of the project in terms of the network provides feedback to the project control system.

26.   Solar panels in the roof power a climate control system.

27.   Most commercial instruments are extremely versatile, with an extensive choice of rotor speeds and a temperature control system.

28.   At the same time, the old fibreglass ducting was replaced with insulated stainless steel ducting and a new control system was fitted to the loader.

29.   The security project which is due to go live in October will introduce site and building access control systems and perimeter closed circuit TV monitoring.