Enstrom 480b vs Leonardo Aw189 vs Robinson R66 vs Sikorsky S 92

The Enstrom 480B is a light, piston-powered helicopter typically used for training, patrol, and utility work. It sits in the small single‑engine category with short-to-moderate range and is generally limited to about five seats including the pilot, making it best for very small teams and local missions. The Robinson R66 is also in the light category but is turbine-powered, offering a more capable step up in speed and useful load versus small piston models while still serving short-to-moderate range missions. Seating is typically five including the pilot, so it remains oriented to small groups. The Agusta/Leonardo AW189 is a medium twin‑engine helicopter designed for offshore transport and SAR/utility roles. It provides substantially longer range than light singles and typically carries on the order of 16–19 passengers in a high-density configuration (or fewer with SAR/mission equipment). The Sikorsky S‑92 is a heavy twin‑engine helicopter optimized for offshore and high-end SAR/VIP/utility operations. It generally matches or exceeds the AW189 in payload and cabin volume, offers long range, and commonly carries roughly 19 passengers (with higher capacity possible depending on configuration).