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**Airport advisory / weather acronyms — decode them on sight.** - **CTAF** — Common Traffic Advisory Frequency. Pilots self-announce on this at uncontrolled fields. - **ATIS** — Automatic Terminal Information Service. Recorded broadcast of current weather and operational info at towered airports. - **AWOS** — Automated Weather Observing System. Continuous, automated weather broadcast (FAA-operated). - **ASOS** — Automated Surface Observing System. Continuous, automated weather broadcast (NWS-operated; more sensors). - The little "Elevation" label calls out where an airport's field elevation is printed on the sectional (immediately after the airport name).

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