What is the minimum spacing on the ILS/MLS in VMC?
3 miles. But that can be reduced to 2.5 if there's a good headwind and the runway's dry. Giving a landing rate of 40-48 per hour depending on wind gradient between 4000' and the ground.
What is the minimum spacing on the ILS in IMC for Cat 1,2,3 approaches?
6 miles in LVP conditions. Giving a landing rate of 28.
What is the minimum spacing on MLS approaches for Cat 1,2,3 approaches?
We don't use MLS at the moment.
Heathrow has 2 runways, one for departures and one for arrivals however mixed mode is being discussed which would mean both runways used for arrivals and departures. Theoretically lifting (and stablising) the movement rate.
What's MMR?