Airbus Helicopters H175 vs Airbus Helicopters H215 vs Bell 525 Relentless vs Leonardo Aw139 vs Leonardo Aw189

All five are medium-to-super-medium twins used for offshore transport, SAR, and utility work, but they span two size classes. The Airbus H175 and Leonardo AW189 sit in the super-medium category aimed at longer offshore missions; typical practical ranges are roughly in the 450–550 nm class depending on fit and reserves, with common passenger configurations around 16–19. The Bell 525 Relentless is also a super-medium offshore-focused design, broadly comparable on range (about 450–560 nm) and usually configured for roughly 16 passengers, emphasizing modern avionics and high cruise efficiency. The Leonardo AW139 and Airbus H215 are generally in the medium class. The AW139 is optimized for fast, flexible multi-mission work with practical ranges often around 400–550 nm and typical seating around 12–15. The H215 (the modern civil Super Puma) prioritizes payload and rugged utility/offshore capability; it often carries about 16–19 passengers, with ranges commonly around 300–450 nm depending on payload and tanking. Exact figures vary by interior, fuel, and mission reserves.