You mean RTL altitude? It's the "Default Altitude" box on the Flight Planner screen.
Awesome thanks found it. another question. The first few times i fliped the switch into RTL mode the Right rear motor stopped and it crashed. has done it twice now and it only happens when i put it into rtl or auto mode. Doesnt do it every time tho. any ideas? Starting to get a hang of this guy. lots of fun. kinda creepy seeing it fly by its self lol Thanks for the help!
Also does the altitude vary with the ground? For exampleif i have the altitude set to 10 and i fly off a hill will it stay the same altitude or go down to 10 above the ground at the bottom of the hill?