Simviation Forums

helllo                                         my name is mister burns
wot is CAT l , ll & lll? all i kno they are is runways and cat lll
are big runways with ILS stuff.'
But what actually are they???

Those three CATs are different CATegories of  instrument approaches- I, II, or III depending on ceiling and visibility limitations, and what equipment is used.  I'd have to look it up, but there are instrument-rated pilots who hang around here... they'll be able to provide more details.

CAT 1, CAT II and CAT III have different minimas and require different equipment in both aircrafts and ground stations. However they do have a thing in common: They are all ILS approaches

Where I fly, our runway is CAT 1, and that's the most basic ILS setup. That means a Decision height of atleast 200ft and a runway visible range of 550m.
And today we actually had some aircrafts forced into holding patterns since the RVR fell below 550m because of the fog

What is RVR?

That's the Runway Visibilty Range
Here's the latest METAR for ESGP (my base)
ESGP 250450Z VRB03KT 0150 R01/0650N R19/0550N FZFG VV002 M00/M00

ok, thanks for your help

Cat IIIb is FUN to fly. On the sim, there is no difference between any of them. The ILSs are all the same (ok so they may be named different, but they are all the exact same ILS equipment).