RPM Tech Cold Air Blower, the AF1 EVO, significantly reduces runway occupancy time and maintenance operation costs. With its 535 mph (850 km/h) high velocity wind and its 19,500 cfm (9.21m3/s) airflow, the AF1 EVO rapidly blows away snow, ice, dust, mollusk shells, and FODs of runways, taxiways and aprons. Many airports use the AF1 EVO on a regular basis to clean pavement crevices, where bristles cannot reach, to decrease engine damages related to FODs. In addition, the unit efficiently removes fresh and packed snow around runway lights and signs in seconds without damaging them.