14 CFR 107.33 Visual observer
Subpart B—Operating Rules
A reference copy of the official regulation text for study. It is not legal advice or an FAA interpretation; always confirm against the current official source.
If a visual observer is used during the aircraft operation, all of the following requirements must be met:
(a) The remote pilot in command, the person manipulating the flight controls of the small unmanned aircraft system, and the visual observer must maintain effective communication with each other at all times.
(b) The remote pilot in command must ensure that the visual observer is able to see the unmanned aircraft in the manner specified in § 107.31.
(c) The remote pilot in command, the person manipulating the flight controls of the small unmanned aircraft system, and the visual observer must coordinate to do the following:
(1) Scan the airspace where the small unmanned aircraft is operating for any potential collision hazard; and
(2) Maintain awareness of the position of the small unmanned aircraft through direct visual observation.