I think I got it now
Only this is confusing me....
Originally Posted by
Denti
Anything put in the DH field is referenced to the Radio Altimeter (RA), anything put in the MDA box is referenced to the baro altimeter.
I thought for Cat I approaches, which are precision approaches, we are setting the DA value (assumed we use QNH) into the DH field of the Perf page. And Cat I is baro altimeter in contrast to Cat II/III, which are radio altimeter.