Originally Posted by
GASA
The ILS protection problem will go away if airlines move to GPS approaches which are on their way. Remote towers might mean a few less controllers but most will still be there as they are still doing the job. Remote towers are just a new place to work not an automated system.
They probably work best as economies of scale though and it's a very fair point that it might be hard for airports to change provider if they wanted to in that situation. Also with nats losing contracts of late the market is getting fragmented.
GBAS CAT III won't get you much more than we can get today out of the latest 32 element ILS systems in terms of mitigating sensitive areas.
Meanwhile airports are working on reducing their exposure to LVP by reducing or removing the cloud trigger, IRVR credits etc.
The business case for GBAS is not an easy one.
ILS will be the dominant landing system for the next 20 years, if not a lot longer.