Airbus Helicopters H125 vs Bell 525 Relentless vs Leonardo Aw139 vs Sikorsky S 76d

The Airbus Helicopters H125 is a light single‑engine utility helicopter, best suited to short‑to‑medium missions; depending on payload and conditions it typically offers roughly 330–360 nm of range and commonly carries a pilot plus about five to six passengers. The Sikorsky S‑76D is a light twin optimized for corporate and EMS roles, with a typical range around 400–450 nm and an executive/EMS cabin usually accommodating about six to eight passengers. The Leonardo AW139 is a medium twin designed for offshore, SAR, and multi‑role transport; it generally delivers about 550–650 nm of range and commonly carries around 10–12 passengers in a transport layout (more in high‑density configurations). The Bell 525 Relentless is a super‑medium twin aimed at longer offshore and high‑utilization missions; it is typically positioned around 600–700+ nm of range and a standard passenger capacity in the mid‑teens, commonly about 16, depending on interior and mission equipment. Overall, H125 prioritizes simplicity and cost, S‑76D balances speed and comfort, AW139 emphasizes versatility and cabin volume, and 525 targets the longest legs and highest offshore payloads.