What must a visual observer be able to do throughout an operation?

The visual observer exists to extend the pilot's awareness, and that extension is only real if what the observer sees reaches the pilot in time to act on. Part 107 therefore requires that the pilot and observer maintain effective communication throughout the operation — not merely that the observer be present and looking. Effective means the method works at the distance and in the conditions involved, that both parties use vocabulary they share, and that the observer can convey position, altitude, attitude and movement rather than just confirming the aircraft is in sight. What the rule does not require is worth noting equally: the observer needs no certificate, has no authority over the controls, and is not responsible for records. Those distractors describe roles that belong to the remote pilot in command. Crews commonly test the radio at operating distance before launch precisely because a communication method that fails at range converts the observer into a bystander.

Part 107 requires the remote pilot and the visual observer to maintain effective communication throughout the operation, so that what the observer sees reaches the pilot in time to act on it.

Part 107 permits use of a visual observer and requires effective communication between the pilot and observer throughout. The observer requires no certificate and holds no authority over the aircraft.

Seeing Is Useless Without Saying. An observer who cannot reach you is a bystander.

Distractors typically hand the observer a pilot responsibility — control, records, certification. None of those belong to the role.

• •Assuming the observer must be certificated
• •Relying on shouted communication over distance
• •Treating presence and line of sight as sufficient without a working channel