Part 107 ACS Task Area 6: Radio Communication Procedures

Radio Communication Procedures is Task Area 6 of the Unmanned Aircraft General, Small (UAG) Airman Certification Standards (ACS). It is one of the more counterintuitive task areas on the test, because Part 107 itself does not require a small unmanned aircraft system (UAS, “drone”) or its remote pilot in command (RPIC) to carry, monitor, or use a radio for a typical visual-line-of-sight (VLOS) operation. The FAA (Federal Aviation Administration) tests this material anyway, because the underlying skill is not “operate a radio,” it is “understand what manned aircraft are telling each other and you,” which is how you satisfy the right-of-way and collision-avoidance obligations that apply to every Part 107 flight regardless of whether you personally transmit a word.

Why this is tested without a radio requirement

Every Part 107 operation must yield the right of way to manned aircraft under 14 CFR 107.37 and may never operate close enough to another aircraft to create a collision hazard. Meeting that obligation near an airport means knowing where manned traffic is likely to be and what it is about to do, and pilots signal both of those things constantly over the radio, whether or not you are the one keying a microphone. A remote pilot who can interpret a position report or a tower instruction overheard on a handheld aviation radio has a real situational-awareness advantage over one who cannot, which is the practical reason this task area exists on a test for people who are not required to carry a radio at all.

Standard phraseology

The FAA uses standardized phraseology across all radio communication so that a call means the same thing at every airport in the country. Key conventions tested here:

• The phonetic alphabet. Letters are spoken as words (Alpha, Bravo, Charlie, and so on) to avoid confusion between similar-sounding letters, most often used for aircraft call signs and taxiway identifiers.
• Altitude and heading. Altitude is stated in feet (“one thousand five hundred”), heading in degrees magnetic, spoken digit by digit (“heading two seven zero,” not “two hundred seventy”).
• Position reports relative to the airport. A pilot self-announcing at a non-towered field states aircraft type, position relative to the airport, and intentions, for example “Cessna one two three Alpha Bravo, three mile final runway two seven, [airport name].”
• Traffic pattern leg names. Upwind, crosswind, downwind, base, and final describe the five legs of a standard rectangular traffic pattern, and hearing one tells you roughly where in the pattern an aircraft is and where it is headed next.

Towered airports: ATC issues instructions

At a towered airport, air traffic control (ATC) actively separates traffic and issues binding instructions over a dedicated tower frequency: “cleared to land,” “hold short of runway two seven,” “line up and wait.” A pilot who receives an instruction is expected to comply or state clearly why they cannot. If you are operating a drone under a Low Altitude Authorization and Notification Capability (LAANC) grant near a towered field, the tower’s instructions to manned traffic are exactly the kind of calls a radio lets you overhear and act on.

Non-towered airports: CTAF and self-announcing

Most airports in the United States have no operating control tower. At these fields, pilots self-separate by announcing their position and intentions on the Common Traffic Advisory Frequency (CTAF), the single shared frequency published for that airport. UNICOM is the ground radio station, often operated by a fixed-base operator, that answers non-ATC calls (fuel, ramp status) on the same or a related frequency. Nobody clears anybody to do anything at a non-towered field; every pilot in the pattern is responsible for building a mental picture of where everyone else is from what they hear and see, which is precisely the skill this task area asks a remote pilot to have too.

Radio communication is not the same thing as your control link

Do not confuse this task area with the RF link between your drone and its controller. Task Area 6 is about voice communication between people, ATC-to-pilot and pilot-to-pilot, which exists independently of your aircraft. The health of your drone’s own control link, what to do if it drops, and the preflight checks that verify it beforehand belong to Task Area 10, Maintenance and Preflight Inspection Procedures, a different skill tested elsewhere on the exam.

Practical takeaway for an actual flight

Nothing in Part 107 requires you to buy or carry an aviation radio. But if you are operating regularly near an airport, a low-cost handheld radio set to the field’s CTAF is one of the highest-value tools you can add to a preflight kit that costs nothing under the regulation: it turns “I hope nothing is inbound” into “I just heard a Cessna call three-mile final for the runway I’m flying near,” which is the entire point of this task area.

How this gets tested

Expect a mix of direct recall (identify what a phonetic-alphabet call sign spells, or what a specific radio call means) and scenario questions that describe a radio transmission and ask what it implies about traffic in the area. The scenario format rewards actually understanding phraseology, not just memorizing definitions. Drill both formats in the free practice bank, which groups questions by task area so you can isolate radio communication and repeat it until the calls stop sounding like a foreign language.