The Hybrid Air Vehicles HAV 304 was built for the US Army Long Endurance Multi-intelligence Vehicle (LEMV) program. It flew successfully for 90 minutes in August 2012. Following cancellation of the LEMV project, Hybrid Air Vehicles re-purchased the HAV 304 vehicle and brought it back to the UK. It has been refurbished and renamed the "Airlander 10". On August 17, 2016 the Airlander 10 had its first successful test flight outside the Cardington Hangars at RAF Cardington. Chief Test Pilot Dave Burns said in a statement "It was privilege to fly the Airlander for the first time and it flew wonderfully. I’m really excited about getting it airborne. It flew like a dream." Over 200 more flight hours are needed for full certification.