Manufacturer of the Defiant X helicopter had filed an appeal with the Government Accountability Office (GAO) to challenge the decision that appointed the tiltrotor as a replacement for the UH-60 Black Hawk helicopter

Company says proposals submitted to the FLRAA program “were not consistently evaluated”. Winning aircraft will replace Black Hawk helicopters

Aircraft awarded FLRAA program contract, defeating innovative Sikorsky Defiant X

Bell aircraft participates in U.S. Army Future Long-Range Assault Aircraft (FLRAA) competition to replace Black Hawk helicopter

Defiant X and Raider X models use rigid coaxial rotor systems to defeat Bell's 360 Invictus and V-280 Valor helicopters