Interesting thought and if it is a Communication failure what procedure allows you to land planes without Communications?
I know they have to have some way to do it but how would they?
Hand signals!
they said something about "high altitude" comm. Apparently the low altitude stuff is OK.
The procedure with lost communications is for the aircraft to fly the routing that was last given by ATC. (The aircraft is given clearance to fly a given routing to its destination before (or immediately after) take-off.)
Well, I'm more familiar with a single airplane's radios going out - the flight continues on its filed flight plan, and colored light signals are shown from the control tower.
I can't imagine all of ATC's radios going out. What a mess that would be.
If it's ATC's radar gone out, then flights would make position reports - there are established procedures used to this day in areas which are not covered by radar, and those procedures would be used in the areas affected by the outage. However, it increases the separation required between airplanes; instead of 29 landings per hour per runway, you might get 12.