vhf flyer
Unfortunately at Manch we do not have as many SIDS off 24R /24Lwhich diverge by 45 degrees or more as Heathrow does. The Hon, Monty, Nokin and to a certain degree WAL Sids fly the same route until 6nm after departure, therefore if you have a jet following a prop on these routes you have to apply a departure interval of at least 4 mins.We try to get the departures in the correct order to reduce these delays, however this is not always possible. Also you can introduce Pol and Desig Sids which diverge by 45 degrees to use time between the above departures. By the way, 06lL moves more traffic on departure than than 24R/L due to the way the SIDS are set up