The Boeing Bird of Prey was an experimental stealth aircraft developed by Boeing Phantom Works during the 1990s as a low observable technology demonstrator. It was never intended for operational service and existed solely to test advanced stealth shaping, materials, and manufacturing techniques for future combat aircraft. The aircraft first flew in 1996 and completed 38 test flights by 1999. The program remained classified until 2002. Its primary goal was to explore affordable stealth by reducin