diydrones/ardupilot — pull request #792 by Ju1ien (2014-01-19 14:11:35+00:00)
Title: Fix for disarm bug - issue #756

Due to baro disturbed by ground effect. Explanation here
https://github.com/diydrones/ardupilot/issues/756

The idea of the fix is we can't leave land while throttle is 0 and then
we ignore the baro and it's disturbances.