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2 Answers

Is it E at the surface OR E at 700′ AGL??

Asked by: 2005 views Airspace

Looking at KTMB near Miami, it is normally D airspace, but when the tower closes it says "other times E". There are no E surface areas, so, when the tower closes at night, where does the E start?  AT the surface? OR at 700' AGL? 

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2 Answers



  1. MarkO on Jun 07, 2018

    At the surface.

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  2. KDS on Jun 07, 2018

    THIS IS FROM THE AIM:

    3-2-5. Class D Airspace
    a
    . Definition. Generally, Class D airspace extends upward from the surface to 2,500 feet above the airport elevation (charted in MSL) surrounding those airports that have an operational control tower. The configuration of each Class D airspace area is individually tailored and when instrument procedures are published, the airspace will normally be designed to contain the procedures.

    1. Class D surface areas may be designated as full-time (24 hour tower operations) or part-time. Part-time Class D effective times are published in the Chart Supplement U.S.

    2. Where a Class D surface area is part-time, the airspace may revert to either a Class E surface area (see paragraph 3-2-6e1) or Class G airspace. When a part–time Class D surface area changes to Class G, the surface area becomes Class G airspace up to, but not including, the overlying controlled airspace.

    NOTE-

    1. The airport listing in the Chart Supplement U.S. will state the part–time surface area status (for example, “other times CLASS E” or “other times CLASS G”).

    2. Normally, the overlying controlled airspace is the Class E transition area airspace that begins at either 700 feet AGL (charted as magenta vignette) or 1200 feet AGL (charted as blue vignette). This may be determined by consulting the applicable VFR Sectional or Terminal Area Charts.

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