Bell 525 Relentless vs Piaggio Avanti Evo vs Robinson R66 vs Sikorsky S 92

The Bell 525 Relentless and Sikorsky S-92 are large, twin‑engine helicopters aimed at offshore, corporate, and utility missions, while the Robinson R66 is a light, single‑engine helicopter typically used for private, training, patrol, and short-hop charter work. The Piaggio Avanti EVO is the outlier: a pressurized twin‑turboprop fixed‑wing aircraft optimized for fast, efficient point‑to‑point travel. In range, the Avanti EVO generally offers the longest legs for typical operations, benefiting from fixed‑wing efficiency. The Bell 525 and S‑92 provide long helicopter ranges suited to extended overwater and IFR-capable missions, with the S‑92 commonly associated with offshore sectors and the 525 positioned as a modern fly‑by‑wire super‑medium. The R66 has the shortest practical range among these, reflecting its lighter class and mission profile. For passenger capacity, the S‑92 leads, often configured for high-density transport (including offshore seating). The Bell 525 typically carries a substantial VIP or utility load but usually fewer than an S‑92 in transport layouts. The Avanti EVO generally seats around 7–9 passengers in executive configurations. The R66 is typically a 4–5 seat aircraft including the pilot.