Plane Tips and Tricks - JochiPochi/TauLabs GitHub Wiki
Arming details
Disarming defaults to happening after a low throttle for thirty seconds. For planes this is a problem if you glide. Make sure you set the timeout to never (under the input configuration page on the arming tab)
Many plane users like to have the arming set to always armed. If you don't do this, make sure you arm and test the motor before throwing the plane. If there is an error, which prevents arming, you won't see if your FC is buried in the plane.