Hello,

 

I just want to learn more about CATs and I thought, where else to seek for answers than here...

 

Reading charts lately, I have noticed that most of the times, there is another ILS approach chart for CAT II and CAT III on the same runway, although the Final approach course may be the same, other values like DA(H) and other stuff, varies. 

 

Any explanations are welcomed, please be as clear as possible. 

 

Best Regards

Any explanations are welcomed, please be as clear as possible.

Right from the FAA - https://www.faa.gov/about/office_org/headquarters_offices/avs/offices/afs/afs400/afs410/status_lists/

Well shoot, I thought there were going to be cat videos.

Or a picture saying "Hang in there!".

 

 

Any explanations are welcomed, please be as clear as possible. 

 

CAT I - standard mins (usually 200' AGL, but measured by BARO altitude; about 2500' lateral visibility)

CAT II - lower mins (about 100' AGL, measured by RADIO altitude; about 1500' lateral visibility)

CAT III - even lower mins (no vertical requirement; about 1000' lateral visibility, but usually less, decreasing for IIIb)

 

That's the basic template, though each airport is evaluated individually, and the mins are usually lower (especially the RVR).