I suppose GP meant to say “single engine non-turboprop turbofan/turbojet private jet that are FAA certified to operate in the US with appropriate civilian licenses”.

And while there are countless single engine jet planes and many small business jets without lavatory, there indeed aren’t many (“jet” engine && single engine && business jet) designs, let alone civilian type certified models.

Certification is the process of getting an aircraft design/model approved by the FAA for sale/use. There are 3 phases for GA commercially available aircraft, type certification (design approved), production certification (manufacturing approved), and airworthiness certification (plane tested, and ready for sale to the public)

Usually when someone says a plane has received its certification they mean it’s ‘airworthiness certification’, so the final approval by the FAA.

that’s what i meant.

what makes this plane unique is its single jet engine. this also makes running costs lower.