The world record for the world's busiest airport for one day, was at this site during the 1999 British Grand Prix. There were 4,200 documented aircraft movements (1 movement being a landing or a takeoff) in one day from dawn till dusk. The airfield was fully licensed and used a sophisticated air traffic control service, using six full air traffic control radio frequencies and a continuous message broadcast (ATIS) service, operated by a team of 24 air traffic controllers. This achievement was coordinated completely on a VFR (Visual Flight Rules) basis without the assistance of radar or any other electronic navigation aids.