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MULTICOM frequency at a non-towered airport

Remote Pilot (Part 107) practice question 6 of 31 on Airspace / Operational Requirements. ACS element UA.II.B.K3 · 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 plans to monitor radio traffic near a non-towered airport that has no flight service station (FSS) and no UNICOM. Which frequency does the study guide say will be used there?

  1. AThe UNICOM frequency of 122.8
  2. BThe MULTICOM frequency of 122.9
  3. CThe tower frequency listed on the sectional chart
Show the answer and explanation

Correct answer: B. The MULTICOM frequency of 122.9

  • A — incorrect 122.8 is the usual UNICOM frequency, but the airport in the scenario has no UNICOM.
  • B — correct The study guide states that a MULTICOM frequency of 122.9 will be used at an airport that is non-towered and does not have an FSS or UNICOM.
  • C — incorrect A non-towered airport has no operating control tower and therefore no tower frequency to use.

BACKGROUND

At an airport without an operating control tower, pilots communicate on a Common Traffic Advisory Frequency (CTAF). The CTAF may be a UNICOM, MULTICOM, flight service station (FSS), or tower frequency, and it is identified in aeronautical publications such as the sectional chart and the Chart Supplement U.S. Most non-towered airports have a UNICOM frequency, usually 122.8. When a non-towered airport has no UNICOM or any other frequency listed, the MULTICOM frequency of 122.9 is used. A remote pilot is not required to communicate with manned aircraft but can monitor the frequency for situational awareness.

STUDY TIP

Pair the two numbers: 122.8 is the typical UNICOM, 122.9 is MULTICOM for airports with no UNICOM or FSS.

KEY POINTS

  • MULTICOM 122.9 is used at non-towered airports with no FSS or UNICOM.
  • UNICOM is usually 122.8 but should be checked on the chart or Chart Supplement.
  • Remote pilots may monitor CTAF for awareness but are not required to transmit.

SOURCES

  • Remote Pilot Study Guide (remote_pilot_study_guide.txt) ch7 "Communication/Broadcast Procedures"
  • Remote Pilot Study Guide (remote_pilot_study_guide.txt) ch7 "Recommended Traffic Advisory Practices"
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MORE ON AIRSPACE / OPERATIONAL REQUIREMENTS

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.