Also it is easier to sequence from the south cause its all our airspace whereas from the north we have little control as to how we recieve the traffic from Gabs and Harare etc.
Therefore we prefer to start spacing from the south and try get distance between the arrivals from the south and then put the arrivals from the north on a downwind and feed them into the gaps area south has made fo us. However we have to have all acft doing the same speed on final to ensure that the required spacing is maintained. Acft on downwind will have been slowed already so that is why speed will be pulled on 1st ctc from Radar although area could of had you fast to keep there spacing from the south so the gaps don't close. The main problem is the straight in approaches as obvously they put you staight on to final so the distance to touchdown is limited whereas on a down wind if the spacing can't be achieved then the downwind can be extended, so the only way to keep spacing is use positive speed control.
However I am a newby on Radar so maybe more people can tell you more but come visit it will help clar up a lot of th misconceptions
Last edited by Little One; 28th Apr 2004 at 08:58.