Airbus Helicopters H155 vs Leonardo Aw139 vs Sikorsky S 76d

The Airbus Helicopters H155 is typically positioned as a medium twin for offshore support and VIP/EMS roles, offering a solid blend of cabin comfort and efficiency. Its practical range is generally in the mid-to-upper several-hundred–nautical-mile class (often around 450–500 nm depending on configuration), and it commonly carries about 12 passengers in a standard transport layout, with variants optimized for fewer VIP seats or medical fit-outs. The Leonardo AW139 sits slightly more toward the upper end of the medium-twin category and is often chosen when operators want more cabin volume and payload flexibility. Its typical range is broadly similar or a bit higher in many configurations (often around 500 nm), and it commonly accommodates roughly 12 to 15 passengers depending on seating density and mission equipment. The Sikorsky S-76D is a medium twin strongly associated with corporate/VIP and EMS missions, emphasizing refinement and performance. Its typical range is in a comparable bracket (often roughly 400–450+ nm), and it generally seats about 12 passengers in commuter-style layouts, with many executive configurations carrying fewer.