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MULTICOM when no frequency is listed

Remote Pilot (Part 107) practice question 15 of 15 on Operations / Radio Communications. ACS element UA.V.A.K4 · difficulty: standard. Want to answer it in a timed quiz? Use the Remote Pilot (Part 107) practice mode.

Question bank updated 2026-09-22

QUESTIONA remote pilot checks the sectional chart and the Chart Supplement U.S. for a non-towered airport and finds that no UNICOM or any other frequency is listed. Which frequency will manned aircraft use for advisories there?

  1. AThe UNICOM frequency, 122.8
  2. BThe MULTICOM frequency, 122.9
  3. CThe nearest control tower's frequency
Show the answer and explanation

Correct answer: B. The MULTICOM frequency, 122.9

  • A — incorrect 122.8 is the usual UNICOM frequency, but this airport has no UNICOM listed, so the MULTICOM frequency applies instead.
  • B — correct The study guide states that for non-towered airports that do not have a UNICOM or any other frequency listed, the MULTICOM frequency of 122.9 will be used.
  • C — incorrect A non-towered airport has no operating control tower, and the guide does not direct pilots to a neighboring tower's frequency for local advisories.

BACKGROUND

The first step in radio procedures near a non-towered airport is to identify the appropriate frequency. Most such airports have a UNICOM frequency, usually 122.8, listed on the sectional chart or in the Chart Supplement U.S. When an airport is non-towered and has no flight service station (FSS) or UNICOM, and no other frequency is listed, the MULTICOM frequency of 122.9 is used. Manned aircraft self-announce their position and intentions on this frequency, and a remote pilot can monitor it for situational awareness without transmitting.

STUDY TIP

The decision rule is simple: a listed frequency wins; if nothing is listed, MULTICOM 122.9. Do not confuse it with the usual UNICOM value of 122.8.

KEY POINTS

  • MULTICOM 122.9 is used when a non-towered airport has no FSS or UNICOM.
  • Check the sectional chart or Chart Supplement U.S. before defaulting to 122.9.
  • A remote pilot monitors the frequency rather than transmitting on it.

SOURCES

  • remote_pilot_study_guide.txt ch7 "Communication/Broadcast Procedures"
  • remote_pilot_study_guide.txt ch7 "Recommended Traffic Advisory Practices"
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MORE ON OPERATIONS / RADIO COMMUNICATIONS

SkyDrill is not affiliated with the FAA. This is an original practice item based on 14 CFR part 107, 14 CFR part 89, and the FAA Remote Pilot – Small UAS Study Guide (FAA-G-8082-22). Regulations and handbooks are revised; confirm details against the current edition.