Bell 525 Relentless vs Enstrom 480b vs Robinson R66 vs Sikorsky S 92

The Bell 525 Relentless and Sikorsky S-92 sit in the large, transport-category class aimed at offshore energy, SAR, and executive shuttle missions, while the Enstrom 480B and Robinson R66 are light, utility helicopters more commonly used for training, patrol, personal transport, and light commercial work. In range, the S-92 and Bell 525 generally lead among these four, designed for longer offshore legs with substantial fuel and payload margins; the 525 is a newer-generation platform and is typically positioned as offering long range with high cruise efficiency, while the S-92 is a proven long-range workhorse. The R66 and 480B have shorter typical ranges suited to regional hops rather than sustained offshore operations. Passenger capacity follows the same pattern: the S-92 and 525 can be configured to carry large groups (commonly around the high teens, depending on interior and mission kit), whereas the R66 is typically a five-seat helicopter including the pilot, and the 480B is usually configured for roughly five seats including the pilot.