Hi everybody,
I hope the problem is solved for me, want to share with you the procedure I follow.
My conf is
- Ipad air 2 wifi only, model A 1566
- Ios 10.2.1 (ios beta software profile)

I installed last ios beta vers a couple of weeks ago but the problem still presents.
Then (after reading this post) I
- turn off the garmin glo
- unpair the garmin glo from ipad
- hard restart the ipad (hold button until apple appears and turn on again)
- pair again the garmin glo

Tested for 5 hours at home and 2 hours today in flight, never lost signal.

Hope this help.

I will never update ios again

Ciao, Jacopo