I was wondering what a SPAD was too - and I find that I've actually built and flown one - not sure if this one "meets the cut" for a true SPAD purist - it used a foam wing, not cardboard.
Some years ago, I built and flew a couple of Gremlin combat planes (just for fun - not for combat). They used plastic downspout for the fuse, and foam wings. Still have a spare set of wings in the basement (and one built). Probably not a good idea to make it the first plane I put back into the air after 9 years out of the hobby
It uses 3 servos - one for each aileron, and the throttle. No rudders, so if you get it into a spin, there's no recovery (and almost no penalty I recall - the thing was so light, it would spin down to the ground, you go pick it up, flip the prop and launch it for more
racores.com is the website, still operating after all these years.