Airbus Helicopters H225 vs Bell 525 Relentless vs Pilatus Pc 24 vs Robinson R66

The Airbus H225 and Bell 525 Relentless are large, long-range twin‑engine helicopters aimed at offshore, SAR, and executive transport. The H225 is typically the higher-capacity lifter, often configured around 16–19 passengers, with long overwater legs commonly in the roughly 450–500+ nm class depending on fit and reserves. The Bell 525 is a modern super‑medium twin with similar mission intent, generally seating up to about 16 passengers and offering comparable long-range capability, often cited around the mid‑500 nm range in typical configurations. The Pilatus PC‑24 is different in kind: a twin‑engine business jet rather than a helicopter. It trades vertical lift for speed and longer point‑to‑point reach, typically carrying 6–10 passengers in executive layouts (more in high-density), with range commonly around 2,000 nm class depending on payload and conditions. The Robinson R66 is a light single‑engine helicopter for utility and private use, usually seating 4 passengers plus a pilot (5 total), with shorter range, commonly around 300+ nm.