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CLASS A Airspace

Class A (alpha) airspace covers the entire Earth. If you look at any sectional chart i.e., VFR or IFR, Class A airspace is not charted.

This airspace is controlled.

Airspace Dimensions:

Airspace between 18,000 feet MSL up to and including 60,000 feet or FL600 (FL - Flight Level).

Extends over the waters 12 NM off the coast in the lower 48 states and Alaska.​​

Entry Requirements:

  • Instrument Flight Rules (IFR) only

  • All aircraft must set altimeter to 29.92

  • Mode S transponder

  • ADS-B 1090 ES required.

Class A Weather Minimums:

  • None


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