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:
“Literature exists at the same time in the modes of error and truth; it both betrays and obeys its own mode of being.”
—Paul Deman (1919–1983)
“In such a night, when passing clouds give place,
Or thinly veil the heaven’s mysterious face;
When in some river, overhung with green,
The waving moon and trembling leaves are seen;”
—Anne Finch, Countess Of Winchilsea (1661–1720)