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 Functions The modern air data computers and their associated instrumentation are used to measure a number of criti-cal air mass properties. The computer must track pressure changes as the aircraft climbs, descends, accelerates, decelerates and then accurately pre-dict, for example, capture points for the autopilot. The atmospheric pres-