Sam Spade wrote:
As to recently, I believe it became effective this past February. And,
these things have to work for everyone, from Approach Category A to D.

Why? There's no reason you can't limit the applicability to Cat A&B
airplanes - that's really most of the GA fleet, and 100% of what shoots
many of the approaches where this is done. There are even entire
approaches that are not approved for anything but Cat A&B.

Michael