RE: Airtronics Z compatible failsafe?
The ofna micro fail safe will work. You can check Tower Hobbies they have em.It does work with the airtronics z connector. I use one on my MX-3S with matching airtronics receiver.
Check this link:
[link]http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXEYG2&P=ML[/link]