Beechcraft King Air 360 Er vs Bell 525 Relentless vs Robinson R66

The Beechcraft King Air 360ER is a fixed‑wing twin‑turboprop business aircraft optimized for efficient point‑to‑point travel. It offers the longest range of the three at roughly 1,500–1,800 nautical miles (configuration and reserves dependent) and typically carries about 6–9 passengers in a pressurized cabin, making it best suited for regional and some long cross‑country missions. The Bell 525 Relentless is a large, long‑range twin‑engine helicopter aimed at offshore, corporate, and executive transport. Its typical range is around 500–600 nautical miles, and cabin layouts commonly accommodate about 12–16 passengers depending on configuration, trading fixed‑wing speed and range for vertical lift and access to helipads and remote sites. The Robinson R66 is a light single‑engine helicopter for utility and short‑range transport. It generally ranges about 300–350 nautical miles and usually carries 4 passengers plus a pilot, favoring lower operating cost and simplicity over capacity and endurance.