posrategearup
To Spooky2. You were asking why not just set Cat II mins if the airplane says "NoLand3". Cat II mins are right around 100 ft on the radio altimeter - with the approach survey, it may be slightly more or less than 100 ft - and an RVR of 1200/1600 (occasionally in Canada, 1000) ft. A Cat III Land 2, on the other hand, uses a DH of 50 ft, and allows the approach to begin with an RVR of only 600 ft. There is a very definite advantage of being able to fly a Land 2 over a Cat II.