By Sarina Houston. Updated March 01, 2015. Class D airspace surrounds airports that have an operating air traffic control tower, but do not have radar services (or at least are not required to.) Airspace surrounding a Class D airport is only classified as a Class D airport when the tower is in operation.
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Desyrel Dividose (trazodone): I have used this medication for about 8 years and without it I don't sleep. I wake every night without fail and it takes me hours to get back to sleep. This medication can be taken before bed or in the middle of the night as it's out of your system in about 4 hours.