Airbus Helicopters H175 vs Bell 525 Relentless vs Leonardo Aw139 vs Leonardo Aw189 vs Sikorsky S 92

All five are twin‑engine medium helicopters commonly used for offshore transport, SAR, and VIP missions, but they span “super‑medium” to “heavy” classes. The Airbus Helicopters H175 is a super‑medium type, typically offering around 16–18 passengers in an offshore layout and a practical range in the roughly 600–700 km class depending on reserves and configuration. The Bell 525 Relentless is also a super‑medium, aimed at similar missions with about 16–20 passengers and broadly comparable range, often cited in the same general bracket as the H175. The Leonardo AW139 sits a step smaller in the medium category, usually around 12–15 passengers with shorter typical range, often around 500–600 km. The Leonardo AW189 is Leonardo’s larger super‑medium, generally configured for about 16–19 passengers and range again around the 600–700 km class. The Sikorsky S‑92 is the heavy helicopter in this group, commonly carrying about 19 passengers offshore and generally offering the longest all‑up, mission‑flexible range among these, typically around 700–900 km depending on fit and reserves.