Airbus Helicopters H175 vs Leonardo Aw139 vs Leonardo Aw189 vs Sikorsky S 76d

All four are twin‑engine civil helicopters, but they sit in different size classes. The Airbus Helicopters H175 and Leonardo AW189 are “super‑medium” category aircraft aimed at offshore and utility missions, typically offering the longest ranges in this group and the most cabin volume. In practical terms, both can be configured for roughly 16–19 passengers depending on layout and mission equipment, and their range is commonly in the mid‑400 to ~500+ nautical mile class with standard fuel, with options that can push endurance further. The Leonardo AW139 is a medium helicopter positioned between the super‑mediums and the lighter Sikorsky. It generally carries about 12–15 passengers in typical commercial configurations and delivers strong point‑to‑point capability, with range often around the 400+ nautical mile class depending on fit and reserves. The Sikorsky S‑76D is a light‑intermediate helicopter optimized for corporate/EMS and shorter offshore legs. It usually seats about 8–12 passengers and tends to have the shortest range of the four, often around the 350–450 nautical mile class depending on configuration.