diydrones/ardupilot — pull request #1015 by jason4short (2014-04-23 05:33:30+00:00)
Title: Flip Updates

Added Pitch axis flipping. You must be pushing forward or back 3° to make it flip in Pitch axis or it will flip in the default roll axis.
Added some extra throttle control to maintain altitude
removed the CH7 ability to exit Flip mode. It will exit only if completing flip or user aborts with control sticks.