Originally Posted by
opnot
Una Due Tfc
single rwy ops a 6 mile gap is required between arrivals
dual rwy ops a 4mile gap is required between arrivals
Therefore for any given hour you will land more acft on dual rwy ops
There are no wake vortex restrictions between arrivals and departures on dual rwy ops under normal operating conditions
3NM on most runways being used exclusively for arrivals if equipped with rapid exit taxiways and wake turbulence is not a factor. If the landing runway is the one being crossed to get to the departure then arrivals must be spaced out further to allow this. Same with departures being spaced out further to allow arrivals cross the runway to get to the terminals, hence less capacity.
The 760 m rule is an ICAO requirement, but I know the UK does other things non ICAO re wake turbulence so I'll take your word on that