You can buy a DIY opensource 3D printer that can print on paper by putting a pen where the extruder is and use some open source software to convert text in GCODE.
https://github.com/boy1dr/3DWriter https://indestructables.private.coffee/Turn-Your-3D-Printer-Into-a-Plotter/
I’m not in the US, I don’t know how FAA operates. In my socially ridiculous country it’s called ENAC and the difficulty is similar to that of a car license in terms of the level of knowledge required, and it’s an infinite bureaucratic stress like any non-mainstream license, only those who do it for work do it.