Beechcraft King Air 360 Er vs Bell 525 Relentless vs Leonardo Aw189 vs Sikorsky S 92

The Beechcraft King Air 360ER is a twin‑turboprop fixed‑wing aircraft, typically used for regional transport and special missions. It offers the longest range of the group at roughly 1,500–1,800 nautical miles depending on payload and reserves, but carries the fewest passengers in commuter-style layouts, generally about 6–9. The Bell 525 Relentless, Leonardo AW189, and Sikorsky S‑92 are all twin‑engine helicopters aimed at offshore and utility transport. Their practical ranges are shorter than the King Air’s, typically around 500–700 nautical miles with reserves, varying notably with cabin fit, auxiliary tanks, and passenger count. In capacity, the Bell 525 and AW189 usually sit in the mid‑teens, commonly around 12–16 passengers, while the Sikorsky S‑92 is the largest people‑mover of the three, often configured around 16–19 passengers and optimized for high‑payload, long‑leg offshore work. Overall, the King Air 360ER leads on range and cruise efficiency, while the helicopters trade range for vertical lift and typically higher passenger capacity, with the S‑92 generally topping capacity among the rotorcraft.