Mode C Veil

Mode C veil refers to a kind of airspace which surrounds most of primary Class B airports within United States. This airspace extends horizontally to a circle of 30 NM radius centered on the airport and extends vertically from the surface up to 10,000 feet MSL. The name refers to the mode of transponder operation which is required within this airspace. Out of 37 existing (as of late 2012) Class B airports in the United States, 35 airports (i.e., all but 2) have Mode C veil centered on them. The only two that don't are Houston Hobby Airport and Miramar Naval Air Station.

Famous quotes containing the words mode and/or veil:

    Sight is the least sensual of all the senses. And we strain ourselves to see, see, see—everything, everything through the eye, in one mode of objective curiosity.
    —D.H. (David Herbert)

    She, as a veil down to the slender waist,
    Her unadorned golden tresses wore
    Dishevelled, but in wanton ringlets waved
    As the vine curls her tendrils, which implied
    Subjection, but required with gentle sway,
    And by her yielded, by him best received,
    Yielded with coy submission, modest pride,
    And sweet, reluctant, amorous delay.
    Nor those mysterious parts were then concealed:
    Then was not guilty shame: dishonest Shame
    Of Nature’s works, Honour dishonourable.
    John Milton (1608–1674)