Oh I’m aware lol, I don’t think I ever saw much more than 1000 fpm up high in the GIV when it was light, but it’s been a while so I can’t remember for sure. I was just wondering what planes he flew.Even in airplanes that perform well at the higher altitudes, if you’re doing 4,000fpm through the service ceiling - that’s a big problem. I’m currently flying the CL30, which means I don’t need a large Gulfstream pilot sized suitcase.
I’m not a Lear pilot, but they climb to altitude very well. My friends that fly them regularly see sea level to 10,000’ in two minutes or less.