Depends on which Airtronics receiver you have. Is it blue? That might seem like a silly question, but Airtronics did smart thing when they switched from the old "Airtronics" connector to the newer "Z" connector. If the Airtronics item in question is blue, it's the new "Z" connector. If it is black, it's the old "Airtronics" connector.

Z is the same as JR and Hitec's universal connector. The wiring is the same as Futaba. Futaba puts an alignment tab on their male connectors. All you have to do with your Futaba servos is carefully trim the little alignment tab off with a razor blade or knife. If you don't want to cut the tab off at the servo end, order Futaba extensions and cut the tab off of the extension's male plug. If you want to use universal extensions, cut the tab off on the Futaba servo's male plug.