---- USA ---- ------------------- US Air Force ----------- 550th Special Operations Squadron US Air Force Research Laboratory 1st Helicopter Squadron 6th Special Operations Squadron 7th Special Operations Squadron 8th Special Operations Squadron 20th Special Operations Squadron 21st Special Operations Squadron 23d Flying Training Squadron 26th Expeditionary Rescue Squadron 31st Rescue Squadron 33d Rescue Squadron 34th Weapons Squadron 36th Rescue Squadron 37th Aerospace Rescue and Recovery Squadron 37th Helicopter Squadron 38th Rescue Squadron 39th Aerospace Rescue and Recovery Wing 40th Aerospace Rescue and Recovery Squadron 40th Flight Test Squadron 40th Helicopter Squadron 41st Rescue Squadron 48th Rescue Squadron 54th Aerospace Rescue and Recovery Squadron 54th Helicopter Squadron 55th Rescue Squadron 56th Rescue Squadron 57th Aerospace Rescue and Recovery Squadron 57th Wing 58th Military Airlift Squadron 66th Rescue Squadron 67th Aerospace Rescue and Recovery Squadron 67th Special Operations Squadron 71st Special Operations Squadron 76th Helicopter Squadron 79th Rescue Flight 101st Rescue Squadron 102nd Rescue Squadron 129th Rescue Squadron 188th Rescue Squadron 210th Rescue Squadron 212th Rescue Squadron 301st Rescue Squadron 302d Special Operations Squadron 304th Rescue Squadron 305th Rescue Squadron 309th Aerospace Maintenance and Regeneration Group 318th Training Squadron 412th Flight Test Squadron 413th Flight Test Squadron 422nd Test and Evaluation Squadron 432d Tactical Drone Group 459th Airlift Squadron 512th Rescue Squadron 550th Helicopter Squadron 551st Special Operations Squadron 601st Tactical Air Support Squadron 908th Wing 1370th photomapping wing 1550th Aircrew Training and Test Wing 4604th Support Squadron 6514th Test Squadron 6515th Organizational Maintenance Squadron ------------------- 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 ----------- ------------------- NASA ----------- ------------------- 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 Agriculture ----------- ------------------- US Department Of Energy ----------- ------------------- US Department of State ----------- ------------------- Air Logistics ----------- ------------------- Air Methods ----------- ------------------- Airlift Northwest ----------- ------------------- 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 ----------- ------------------- Leonardo Italy ----------- ------------------- 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 ----------- ------------------- Air Evac Lifeteam ----------- ------------------- Life Flight Network ----------- ------------------- Helisim ----------- ---- More Units ---- 1994 to 2016
550th SOS
Models