Bell 525 Relentless vs Leonardo Aw189 vs Robinson R66 vs Sikorsky S 92

Bell 525 Relentless and Leonardo AW189 sit in the “super‑medium” class, typically used for offshore transport and high‑end corporate missions. The 525 generally offers longer range and higher cruise speed than the AW189, while passenger capacity is broadly similar, commonly configured around the mid‑teens depending on cabin layout and fuel reserves. The Sikorsky S‑92 is a larger “heavy” helicopter optimized for offshore and SAR, carrying more passengers and offering more cabin volume than either super‑medium, with long range that can match or exceed them depending on configuration, but with higher operating footprint and cost. The Robinson R66 is in a much lighter “light turbine” category aimed at personal, utility, and training roles; it carries far fewer passengers (typically a small handful) and has substantially shorter range than the other three. In short, R66 is a light utility aircraft, AW189 and 525 are mid‑capacity long‑leg helicopters for demanding commercial missions, and S‑92 is the high‑capacity heavy-lift people mover for serious offshore/SAR work.