Airbus Helicopters H225 vs Bell 525 Relentless vs Gulfstream G700 vs Robinson R66

The Airbus H225 and Bell 525 Relentless are large, long‑range twin‑engine helicopters aimed at offshore, SAR, and utility missions. The H225 typically offers very strong payload and cabin volume with practical ranges often in the mid‑400 nautical mile class (depending on fit and reserves) and seating commonly around 16–19 passengers in transport layouts. The Bell 525 is a newer‑generation super‑medium with a similar mission set, generally targeting comparable range (often roughly 450–500+ nautical miles, configuration dependent) and passenger capacity commonly in the mid‑teens. The Gulfstream G700 is a long‑range business jet, not a rotorcraft, built for intercontinental travel. It carries typically 10–19 passengers in executive layouts (and can be configured for more), with published range around 7,500 nautical miles, far exceeding the helicopters. The Robinson R66 is a light single‑engine helicopter for private, training, and light utility use. It usually seats 4–5 passengers including the pilot, with range commonly around 300 nautical miles depending on load and reserves.