Here is an excerpt from FAA 107. § 107.19 Responsibility of the operator. (a) The operator is directly responsible for, and is the final authority as to the operation of the small unmanned aircraft system. (b) The operator must ensure that the small unmanned aircraft will pose no undue hazard to other aircraft, people, or property in the event of a loss of control of the aircraft for any reason. How can a pilot ensure that his drone wont hurt any person, other aircraft or property if he looses control of the aircraft? If you have a fly away....you lost control and no telling what is going to happen.