Part 107 Crew Resource Management (CRM): The Visual Observer Relationship, Explained

Crew resource management (CRM) is not its own numbered task area on the Part 107 knowledge test. It shows up inside Task Area 5, Operations, and again inside Task Area 8, Aeronautical Decision-Making, which is exactly why candidates searching for “Part 107 CRM” often cannot find a single answer: the material is split across two task areas and easy to under-study as a result. This guide pulls the CRM material into one place and goes deeper than either task-area overview on the one relationship the test actually cares about, the remote pilot in command (RPIC) and the visual observer (VO).

CRM does not require more than one person

Crew resource management is the practice of using every available resource, human and informational, to run a safer flight, and a solo remote pilot still practices it every time they check weather, review a site survey, or read a NOTAM (Notice to Air Missions) before launching. Adding a visual observer is the most-tested application of CRM on the exam because it is the most common real-world case of a small UAS (unmanned aircraft system) “crew,” but do not walk away thinking CRM only applies once a second person shows up. The test occasionally uses a solo-pilot scenario specifically to check whether you understand that.

What a visual observer actually does, and does not do

A visual observer’s job under Part 107 is narrow and specific: maintain visual line of sight (VLOS) with the unmanned aircraft and scan for other aircraft, obstacles, and hazards the remote pilot cannot see while they are focused on a controller or a display. A VO does not fly the aircraft, does not need a remote pilot certificate, and does not carry any of the RPIC’s regulatory authority or responsibility. The single most common wrong answer choice on a CRM scenario question hands the VO some piece of the RPIC’s decision-making authority (a final go or no-go call, control of the aircraft) that the regulation does not give them. The RPIC remains solely responsible for the aircraft and the operation the entire time, regardless of how many observers are helping.

Shared stop authority is the concept the test tests hardest

The one CRM principle that shows up most consistently in scenario questions is shared stop authority: either the RPIC or the VO must be able to call for the flight to stop, or the aircraft to land immediately, without waiting for the other person’s permission. A crew where only the RPIC can call a halt has already lost the main safety benefit of adding a second set of eyes, because a VO who sees a hazard but has to wait for the RPIC to notice it independently is not actually adding anything. Expect a scenario that describes a VO spotting a hazard and hesitating to say something, then asks what should have happened; the correct answer is always immediate communication, not waiting to be asked.

What an actual pre-flight CRM briefing covers

The test does not require you to memorize a script, but scenario questions assume a briefed crew, not an improvising one, so it helps to know what a real briefing establishes before launch:

• Roles. Who is flying, who is observing, and what each person is specifically watching for (other aircraft, people entering the area, obstacles along the flight path).
• Communication. How the VO alerts the RPIC (a specific verbal call, not a vague “watch out”), and confirmation that the RPIC actually heard it.
• Stop authority. An explicit agreement that either person can call a stop, said out loud, not assumed.
• Lost-VLOS plan. What happens if the VO loses sight of the aircraft, since VLOS is a regulatory requirement the crew must maintain, not just a safety nicety.

Briefing this before takeoff, rather than improvising it mid-flight, is the general CRM principle the ACS (Airman Certification Standards) is really testing: preventable incidents come from undefined roles and unspoken assumptions, not from a lack of goodwill on the crew.

CRM versus ADM: two task areas, one relationship

Task Area 8 frames CRM as one tool inside a broader decision-making toolkit alongside the PAVE checklist and the DECIDE model; Task Area 5 frames it as an operational limitation tied to how many aircraft one crew can safely fly and under what visual-observer setup. Both descriptions are correct and the test can approach the same VO scenario from either angle, so read Aeronautical Decision-Making for how CRM fits alongside PAVE and the five hazardous attitudes, and Operations for how it fits alongside emergency procedures and the operational limits on multi-aircraft flights.

How this gets tested

Expect a short scenario describing an RPIC and VO on a flight, sometimes with a hazard the VO notices, and a question asking what the crew should do or who holds a specific responsibility. The trap answers usually give the VO too much authority or too little voice. Drill this pattern in the free practice bank, which mixes CRM scenarios in with the rest of the Operations and Aeronautical Decision-Making questions the way the real exam does.