Air Medical Group Holdings (AMGH) placed an order for 21 new Airbus Helicopters H125 singles and H135 light twins for delivery over the course of the next three years, the helicopter manufacturer announced on Tuesday at Heli-Expo 2019. AMGH operates a fleet of more than 306 helicopters and 100 airplanes from 320 bases nationwide under six subsidiaries—Air Evac Lifeteam, Guardian Flight, Med-Trans, REACH, AirMed International, and EagleMed.

In 2018, the company merged with ground ambulance operator American Medical Response (AMR) to form Global Medical Response (GMR). AMGH is one of Airbus Helicopters’ largest customers, with a current Airbus fleet of nearly 85 helicopters.

Fred Buttrell, AMGH president and CEO, said the new helicopters would be used for fleet replacement. More than 700 of the latest version of the H125 are currently in operation around the world. In North America, the H125 is built by Airbus Helicopters Inc.’s facilities in Columbus, Mississippi. To date, the more than 1,300 H135s in service at 300 operators in 60 countries have accumulated five million flight hours.