Airbus Helicopters H155 vs Airbus Helicopters H175 vs Bell 429wlg Globalranger vs Bell 525 Relentless vs Sikorsky S 76d

The Airbus H155 and Sikorsky S-76D sit in the medium twin category commonly used for executive transport and offshore support. The H155 typically carries about 12–13 passengers in a high-density configuration and offers moderate-to-long range for its class, roughly in the 500–650 km (270–350 nm) neighborhood depending on fit and reserves. The S-76D is similar in mission profile with a typical passenger load around 12 and comparable medium range, often cited around 650–750 km (350–400 nm) depending on configuration. The Airbus H175 steps up into the super-medium twin segment, aimed strongly at offshore; it generally seats about 16–18 passengers and provides longer range than H155/S-76D, commonly around 700–900+ km (380–500+ nm) depending on tanks and payload. The Bell 429 GlobalRanger is a light twin: it usually carries about 6–7 passengers (up to 8–9 in some layouts) and has shorter range than the medium/super-medium aircraft, typically around 650–750 km (350–400 nm) depending on configuration. The Bell 525 Relentless is a super-medium twin positioned against the H175, with roughly 16–20 seats and long range often quoted around 900–1,000+ km (500–560+ nm), configuration dependent.