Quick question: I’ve never known what the difference is between the cat rating things. Could somebody be so kind as to explain them to me? Sorry to bother you guys 🙂 like I see cat II ILS approaches and cat III ILS approach charts but I have no clue what the difference is. I’ve always just clicked on the first one that comes up 😂
Hey Ryan!
CAT is basically the unit/system used to determine landing conditions, it mainly focuses on the visibility.
CAT I: fog ceiling or visibility is 200 or more feet (height)
CAT II: fog ceiling is 200ft To 100ft visibility (height)
CAT III: fog ceiling is less than 100ft visibility. (Height)
There is something called CAT IIIB but I don’t use or count that.
6 Likes
It’s to do with the decision height limits and how they correspond to different visibilities:
That specifies them all👆
2 Likes
Ahh makes sense now!! Thanks you so much 🙏
I made this cause of your AC A321 #screenshots-and-videos @AlphaSeven 😂
2 Likes
Hahaha happy to help!
1 Like
Adding on @AlphaSeven if used as the ILS category, the CAT hereby determines the minimum visibility/ceiling allowed to continue the approach.
I believe it’s granted if the landing can be done with 0 visibility by the aid of the ILS CATIIIB system.
3 Likes
This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.