Cost: $2,160, based on an average $15 per square foot. Details: Resembling brick, these patios are best for soils that donât shift. Maintenance: Touch up and add polymeric sand to the joints every two to three years. Seal every two to three yeras to enhance the paver color.
Aeronautical Information Services. 1  Is the authoritative government source for collecting, validating, storing, maintaining, and disseminating aeronautical data for the U. S. and its territories. 2  Develops and maintains all public instrument flight procedures and airways.
Air data computers may be thought of as marshaling yards for the host of environmental and system sensor inputs which supply critical flight data in modern aircraft. The computer uses all these inputs to extrapolate a series of real time results which are then displayed on one or more display units (DUs) in the cockpit.