Airbus Helicopters H175 vs Bell 525 Relentless vs Sikorsky S 76d

All three are twin‑engine civil helicopters, but they sit in different weight and mission classes. The Airbus Helicopters H175 is a super‑medium platform aimed at offshore transport and utility work, typically offering the greatest practical range of the three and a high‑density cabin suited to moving larger groups. The Bell 525 Relentless is also a super‑medium, designed for long‑range offshore and high‑speed corporate/utility missions; its range is generally comparable to the H175 and often positioned as long‑legged for its class, with a cabin that can carry a similar number of passengers depending on configuration. The Sikorsky S‑76D is a medium helicopter oriented more toward corporate/VIP transport, EMS, and short‑ to mid‑range offshore legs; it usually has a shorter range than the two super‑mediums and a smaller cabin. In passenger capacity, typical layouts place the H175 and Bell 525 in the mid‑teens for offshore seating, while the S‑76D is commonly configured around 8–12 seats, with fewer passengers when outfitted for executive comfort.