Bell 525 Relentless vs Bell 412epi vs Sikorsky S 76d

The Bell 525 Relentless is a newer, super‑medium helicopter aimed at higher-speed, longer-range missions such as offshore transport and corporate travel. Compared with the others, it generally offers the longest range in typical configurations and the largest passenger capacity, commonly arranged around 16 seats depending on cabin fit. The Bell 412EPi is a twin‑engine, medium utility helicopter optimized for versatility, including EMS, SAR, firefighting support, and general transport. Its range is typically shorter than the 525 and broadly competitive with, or slightly below, an S‑76D depending on fuel and payload, while passenger capacity is usually in the low‑teens in high-density seating, again varying by interior and mission equipment. The Sikorsky S‑76D is a twin‑engine, light/intermediate helicopter widely used for executive and offshore roles. It typically carries fewer passengers than a 412EPi or 525, often configured for about 8–12, and offers solid range for its class, generally below the 525 but in the same overall band as many 412EPi mission fits.