What is the frequency of Class E airspace?

Each FIA on a map has its own radio frequency as shown on the map below. Class E above 8500ft uses 134.2 while Class G below 8500ft uses 122.4 . *Class G airspace has different rules and procedures depending on your altitude: Below 3000 feet and above 3000 feet clearance from cloud requirements change.



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Most airspace in the United States is class E. The airspace above FL600 is also class E. No ATC clearance or radio communication is required for VFR flight in class E airspace. VFR visibility and cloud clearance requirements are the same as for class C and D airspaces when below 10,000 feet (3,000 m) MSL.

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Class E Airspace: Controlled airspace which is neither class A, B, C nor D. In most areas of the United States, class E airspace extends from 1,200 feet (370 m) above ground level (AGL) up to but not including 18,000 feet (5,500 m) MSL, the lower limit of Class A airspace.

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Perhaps the most misunderstood airspace category, Class Echo (E) starts at 14,500'MSL and extends up to but not including 18,000' (bottom of Alpha Airspace) over the entire continental United States unless otherwise depicted. It also exists above Alpha (above 60,000').

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Class E airspace is often confusing though because it's not clearly depicted on the sectional chart, like the ATC-controlled Classes B, C or D. While Class E airspace is considered “controlled airspace”, you do not need an ATC clearance to fly in it.

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In class E airspace, IFR aircraft are controlled by ATC. This might be a center facility (Air Route Traffic Control Center) or approach/departure facility. As a VFR aircraft, you aren't required to be in contact with ATC, but IFR aircraft must operate on an ATC clearance. That means the airspace is controlled.

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Class E Airspace, indicated by the faded magenta line. Most of the airspace in The United States is Class E airspace. Class E airspace extends from 1,200 feet AGL to 17,999 feet MSL (18,000 feet is the floor of Class A airspace). Class E airspace can also extends down to the surface or 700 feet AGL.

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Class E airspace exists to provide added protection for the separation of IFR and VFR aircraft. It creates a type of airspace in which VFR pilots do not need special clearances, but IFR pilots do.

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Class E Airspace Requirements Basic VFR minimums are 3sm visibility, 500' below clouds, 1,000' above clouds, 2,000' horizontal from clouds.

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Class E4 and E3 airspaces do not require prior authorization, but Class E surface area (E2) airspace surrounds small airports and does require airspace authorization.

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Temporary towers sometimes appear for big events in Class E and G airspaces.

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No person may operate an ultralight vehicle within Class A, Class B, Class C, or Class D airspace or within the lateral boundaries of the surface area of Class E airspace designated for an airport unless that person has prior authorization from the ATC facility having jurisdiction over that airspace.

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E - Shuttle Service (no reservation allowed) or Economy/Coach Discounted. F - First Class. G - Conditional Reservation. H - Economy/Coach Discounted – Usually an upgradable fare to Business. J - Business Class Premium.

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Class E airspace extensions begin at the surface and extend up to the overlying controlled airspace. The extensions provide controlled airspace to contain standard instrument approach procedures without imposing a communications requirement on pilots operating under VFR.

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Upper Class E airspace operations refer to those that take place over 60,000 feet above mean sea level (MSL) in the National Airspace System (NAS). Operations in upper Class E airspace have historically been limited due to the challenges faced by conventional fixed wing aircraft in reduced atmospheric density.

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The FAA requires ADS-B Out capability in the continental United States, in the ADS-B rule airspace designated by FAR 91.225: Class A, B, and C airspace; Class E airspace at or above 10,000 feet msl, excluding airspace at and below 2,500 feet agl; Within 30 nautical miles of a Class B primary airport (the Mode C veil);

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(a) Unless otherwise authorized by the Administrator, no person may operate an aircraft below 10,000 feet MSL at an indicated airspeed of more than 250 knots (288 m.p.h.).

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