The Airport agrees that the runway extension should be supported by conditions to minimise the impact of the development and is willing to discuss these and agree them with the Councils. In particular, the conditions should include ways of restricting operations between 2300 and 0630 hours (0700 on Sundays) recognising that the current lease permits over 900 movements per month between Midnight and 0600 and that the last arrival of the day by a based operator may be after 2300 hours. Among the restrictions to be discussed could be a ban on all but the quietest aircraft at night (this could be done by reference to the QC (Quota Count) system which is used at a number of UK airports to control night noise) plus a dramatic reduction in the permitted number of night movements. In addition a limit on cargo tonnage could be considered. Details should also be agreed on aircraft arrival and departure routes, the operation of helicopters, engine testing and training movements.