So I was studying for my commercial license and came up on this... defined by the FAA LOL!
Part 107 Small Unmanned Aircraft Systems (small UAS)
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Rules for Safe Operation of Small UAS: Abnormal and Emergency Situations
Flyaways
A flyaway begins as a lost link—an interruption or loss of the control link prevents control of the aircraft. As a result, the unmanned aircraft is not operating in a predicable or planned manner. However in a flyaway, the pre-set lost link procedures are not established or are not being executed by the unmanned aircraft, creating an emergency situation.
If a flyaway occurs while operating in airspace that requires authorization, notify ATC as outlined in the authorization.
Part 107 Small Unmanned Aircraft Systems (small UAS)
Rules for Safe Operation of Small UAS: Abnormal and Emergency Situations
Flyaways
A flyaway begins as a lost link—an interruption or loss of the control link prevents control of the aircraft. As a result, the unmanned aircraft is not operating in a predicable or planned manner. However in a flyaway, the pre-set lost link procedures are not established or are not being executed by the unmanned aircraft, creating an emergency situation.
If a flyaway occurs while operating in airspace that requires authorization, notify ATC as outlined in the authorization.