Bell 525 Relentless vs Leonardo Aw139 vs Leonardo Aw189

The Bell 525 Relentless, Leonardo AW139, and Leonardo AW189 are all twin‑engine, multi‑role civil helicopters, but they sit in different size classes. The AW139 is generally considered a medium helicopter, commonly used for EMS, offshore crew change, law enforcement, and VIP transport; it typically carries around 12–15 passengers in high‑density layouts, with a range on the order of roughly 550–650 nautical miles depending on configuration and reserves. The Bell 525 is a “super‑medium” class helicopter aimed at higher speed and longer offshore legs than traditional mediums; it is typically configured for about 16 passengers and offers a range broadly comparable to, and often somewhat greater than, medium twins (roughly 600–700 nautical miles depending on fit). The AW189 is a larger “super‑medium” optimized for offshore and SAR, with higher payload and cabin volume; it is commonly configured around 16–19 passengers and has a similar long‑range envelope, often cited around 600–700+ nautical miles depending on tanks, mission kit, and reserves. Actual figures vary by interior, fuel options, and regulatory reserve requirements.