Part 107 Study Guide
Radio Communications
METAR/TAF weather products, NOTAMs, FSS briefings, AWOS/ASOS, phonetic alphabet, and how to use these resources for preflight planning under 14 CFR 107.49.
17 questions in this topic
Sample Questions
When a METAR includes 'AUTO', it means:
AUTO indicates a fully automated report (AWOS/ASOS) with no human backup. These reports may not capture all weather phenomena (e.g., some types of precipitation or cloud layers can be missed). AIM 7-1-30.
ATIS provides:
Automatic Terminal Information Service (ATIS) broadcasts are identified by phonetic alphabet letters (Alpha, Bravo, etc.) and updated at least hourly or when significant conditions change. AIM 4-1-13.
What frequency is the universal emergency frequency?
121.5 MHz is the international emergency frequency. While remote pilots don't typically have radios, knowing this is part of the ACS and can appear on the exam. AIM 6-3-1.
On a sectional chart, the airport data block shows 'CT-118.3' below an airport symbol. This means:
CT = Control Tower. The number is the tower frequency. If you see a star (*) next to it, the tower operates part-time. When the tower is closed, the airport operates as non-towered. AIM 4-1-5.
💡 Memory tip
CT in an airport data block = Control Tower. The frequency follows. Asterisk (*) = part-time. No asterisk = 24/7 operation.
A NOTAM (Notice to Air Missions) classified as 'FDC' is issued by:
FDC NOTAMs are national-scope notices covering TFRs, instrument procedure amendments, and chart corrections. They take precedence over charted information. Always check NOTAMs before every flight. AIM 5-1-3.
💡 Memory tip
FDC NOTAMs are national mandates — they supersede printed charts. If the chart conflicts with an FDC NOTAM, the NOTAM wins. Always check FDC before flying.
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Start Full Practice ExamRadio Communications FAQ
What is a NOTAM and why does a Part 107 pilot need to check them? ▾
NOTAMs (Notices to Air Missions) provide time-critical information about airspace, airport conditions, and hazards. 14 CFR 107.49 requires the remote PIC to check for TFRs and other airspace hazards before each flight. FDC NOTAMs include TFRs and have regulatory force.
What is the difference between AWOS and ASOS? ▾
ASOS (Automated Surface Observation System) is the more capable and comprehensive system operated by the National Weather Service and is the approved source for official NWS observations. AWOS (Automated Weather Observation System) is older technology, often airport-operated, with varying levels of data output. AIM 7-1-12.