---- USA ---- ------------------- NASA ----------- Armstrong Flight Research Center Langley Research Center Ames Research Center Wallops Flight Facility Johnson Space Flight Center ------------------- US Air Force ----------- ------------------- US Army Aviation ----------- ------------------- US Marine Corps ----------- ------------------- US Navy ----------- ------------------- United States Park Police ----------- ------------------- US Coast Guard ----------- ------------------- US Department of Homeland Security ----------- ------------------- US Department of Justice ----------- ------------------- Congress ----------- ------------------- District of Columbia ----------- ------------------- State of Alabama ----------- ------------------- State of Alaska ----------- ------------------- State of Arizona ----------- ------------------- State of Arkansas ----------- ------------------- State of California ----------- ------------------- State of Colorado ----------- ------------------- State of Connecticut ----------- ------------------- State of Delaware ----------- ------------------- State of Florida ----------- ------------------- State of Georgia ----------- ------------------- State of Hawaii ----------- ------------------- State of Idaho ----------- ------------------- State of Illinois ----------- ------------------- State of Indiana ----------- ------------------- State of Iowa ----------- ------------------- State of Kansas ----------- ------------------- State of Kentucky ----------- ------------------- State of Louisiana ----------- ------------------- State of Maine ----------- ------------------- State of Maryland ----------- ------------------- State of Massachusetts ----------- ------------------- State of Michigan ----------- ------------------- State of Minnesota ----------- ------------------- State of Mississippi ----------- ------------------- State of Missouri ----------- ------------------- State of Montana ----------- ------------------- State of Nebraska ----------- ------------------- State of Nevada ----------- ------------------- State of New Hampshire ----------- ------------------- State of New Jersey ----------- ------------------- State of New Mexico ----------- ------------------- State of New York ----------- ------------------- State of North Carolina ----------- ------------------- State of North Dakota ----------- ------------------- State of Ohio ----------- ------------------- State of Oklahoma ----------- ------------------- State of Oregon ----------- ------------------- State of Pennsylvania ----------- ------------------- State of Puerto Rico ----------- ------------------- State of South Carolina ----------- ------------------- State of South Dakota ----------- ------------------- State of Tennessee ----------- ------------------- State of Texas ----------- ------------------- State of Utah ----------- ------------------- State of Vermont ----------- ------------------- State of Virginia ----------- ------------------- State of Washington ----------- ------------------- State of West Virginia ----------- ------------------- State of Wisconsin ----------- ------------------- State of Wyoming ----------- ------------------- US Department of State ----------- ------------------- Air Logistics ----------- ------------------- Air Methods ----------- ------------------- Brainerd Helicopters Inc ----------- ------------------- Bristow US ----------- ------------------- Brown Helicopter Inc ----------- ------------------- Classic Air Medical ----------- ------------------- Helicopter Express Inc ----------- ------------------- HeliService International GmbH ----------- ------------------- Maritime Helicopters ----------- ------------------- Maverick Helicopters ----------- ------------------- North American Helicopter ----------- ------------------- Panther Helicopters Inc ----------- ------------------- Unical Defense Inc ----------- ------------------- AgustaWestland Philadelphia ----------- ------------------- Airbus Helicopters Inc ----------- ------------------- American Eurocopter ----------- ------------------- Aurora Flight Sciences ----------- ------------------- Bell Helicopter ----------- ------------------- Collins Aerospace ----------- ------------------- Honeywell ----------- ------------------- Kaman ----------- ------------------- MBB Helicopter Corp ----------- ------------------- mcdonnell douglas ----------- ------------------- MD Helicopters ----------- ------------------- Metro Aviation ----------- ------------------- Northrop Grumman ----------- ------------------- Rockwell Collins ----------- ------------------- Sikorsky Helicopters ----------- ------------------- Billings Flying Service ----------- ------------------- Chevron Oil ----------- ------------------- ERA Helicopters ----------- ------------------- Erickson ----------- ------------------- Evergreen Helicopters ----------- ------------------- Grand Strand Helicopters Inc. ----------- ------------------- New York Airways ----------- ------------------- Northwest Helicopters ----------- ------------------- PHI Inc ----------- ------------------- Life Flight Network ----------- ------------------- Helisim ----------- ---- More Units ---- 1961 to present
National Aeronautics and Space Administration
Johnson Space Flight Center 
Models