Its a somewhat common thing though.
An early 737 max flight spelled out "max" over the state of Washington.
A 787 endurance test flight drew a silhouette of itself over most of the US.
Not as hard as you'd think with modern gps equipment.
Still really neat though
if its in the same airspace it would just be tossing the shape into a computer and letting it do all the work. In the case of something like the endurance test it would be throwing it into a computer to plot it and then doing the normal "remembering to change channels and talk to the ATC" regarding airspace stuff.
An early 737 max flight spelled out "max" over the state of Washington.
A 787 endurance test flight drew a silhouette of itself over most of the US.
Not as hard as you'd think with modern gps equipment.
Still really neat though