Huh? Isn't that serial number missing a digit?
No,...
All Aerobats begin with A150 or A152, then the 4 digit s/n.
So, A150
0660 is the 660th Aerobat made...(close enough as there are some exceptions, such as the 150 Aerobat prototyped into the A152)
Personally, I think EVERY model 150 from the 1970 "K" on should have been built as an Aerobat.If you're going to build a training aircraft, why not plan on teaching spins and acro along with the basics?