Bell 525 Relentless vs Sikorsky S 76d

The Bell 525 Relentless and Sikorsky S-76D are both twin‑engine, IFR-capable helicopters commonly considered in the medium business and offshore transport space, but they sit in slightly different weight and mission niches. The Bell 525 is generally categorized as a “super‑medium” helicopter, aimed at longer, heavier offshore and utility missions, while the S‑76D is typically viewed as a “medium” helicopter with a long history in executive transport and shorter-to-midrange offshore work. In range, the 525 is designed to offer a longer legs profile than the S‑76D in many typical configurations, making it more oriented to extended overwater routes and higher payload-range flexibility. For passenger capacity, the 525 is usually configured to carry more passengers in offshore-style seating, whereas the S‑76D more commonly seats fewer passengers, often favoring a more spacious executive layout. In practice, the 525 is the roomier, longer-reach option, while the S‑76D is the lighter, widely proven choice for corporate and regional missions.