DALLAS–Bell is proposing a dedicated instrument flight rules (IFR) variant of its Bell 505 Jet Ranger X single-engine light helicopter to meet an emerging U.S. Army need to refresh its rotary-wing ...

which later became the Bell 206 Jet Ranger, set the standard for light helicopters. But the Hughes OH-6 Cayuse, which also saw extensive military use, helped popularize the light helicopter in the ...