I’m having 3 arrival runways on my airport, so IMO there should 3 planes be able to land at the same time.
But that never happens. At least one of 3 is delayed.
sometimes only two or three minutes, but often more than 10/15.
And when planning 9 flights to three slots (eg: 3x 6:10, 3x 6:20, 3x 6:30) delay of at least 2, mostly 3, planes (1 from each slot) is massive, minimum 30 minutes, often more, up to 1 hour…
Of course, some times planes arriving late, but normally not 33%…
And when watching all the landings, I’ve never seen all 3 runways used at the same time.
So for me it looks like any code-limitation…?