rotor wash all helicopters produce a significant downward flow of air during landing and takeoff
{"Image DocumentName": "Rotor WashAll helicopters produce a significant downward flow of air during landing and takeoff.", "Image ImageDescription": "The larger and heavier the helicopter the greater the velocity of wind produced. A 75 to 100 mph downward flow of air is common. Dumpsters in close proximity to a landing area should have a mechanical means of securing the lid. Helicopter rotor wash has been known to pick up full sheets of \u00be plywood feet into the air. Version 1.8 (9/25/2008) NEMSPA.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}