If you have the new Airtronics Z receiver, then the Futaba should work (minus the tab). I have never done this, so don't take my word for it. I don't like having to modify servo plugs, I wish the industry would standardize their stuff, but they never will.
My rationale is this. If an Air Z will work with a Futaba RX, then the Futaba should work with the Air Z ......heck Tower's servos have a "universal" plug that fits everything.
BO