Groen Brothers Aviation (GBA) has abandoned plans to certificate the Hawk 4 gyroplane, blaming a lack of available financing exacerbated by the11 September terrorist attacks. The Salt Lake City, ...
Groen Brothers Aviation (GBA), the Utah-based gyroplane developer, is forming a joint venture with Al-Obayya in Saudi Arabia to market and manufacture the Hawk gyroplane in the Middle East, North ...