Never had one do it either till now and I secure mine when all possible. This connector plugs into a block with the other end secured to the inside of the block. The App is out side the plane unsecured. Mine falls out when I go to half throttle and before that happens you can hear the ESC beep, indicating it just lost connectivity.

http://www.f3aunlimited.com/webstore...roducts_id=420


Regards,

Bill