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).