Airbus Helicopters H225 vs Bell 525 Relentless vs Leonardo Aw189 vs Robinson R66

The Airbus H225 and Bell 525 Relentless sit in the heavy/super-medium twin category aimed at offshore and long-range utility missions. The H225 is typically the higher-capacity option, commonly configured around 16–19 passengers, with long offshore-range performance; the 525 is a newer super-medium design generally configured around 16 passengers with comparable long-range capability depending on fit and reserves. The Leonardo AW189 is a large medium twin (often called “super-medium”) positioned slightly below heavy twins, usually carrying about 16–19 passengers in high-density layouts, with strong medium-to-long range suited to offshore transport, SAR, and corporate/VIP roles. The Robinson R66 is in a completely different class: a light single-turbine helicopter with much shorter range and far lower capacity, typically 4 passengers plus a pilot, optimized for cost-sensitive utility, training, and private operations rather than offshore lift. Overall, H225, 525, and AW189 compete for multi-passenger, longer-range twin-engine missions, while the R66 is a small, short-range light helicopter.