Beechcraft King Air 360 Er vs Bell 525 Relentless vs Enstrom 480b vs Robinson R66

The Beechcraft King Air 360ER is a pressurized, twin‑turboprop fixed‑wing aircraft optimized for efficient point‑to‑point travel. It offers the longest range of the four at roughly 1,500 nautical miles and typically carries about 6 to 9 passengers depending on interior and mission configuration. The Bell 525 Relentless is a large, fly‑by‑wire twin‑engine helicopter aimed at offshore and high‑utilization transport. Its range is generally in the 500 to 600 nautical mile class (mission dependent), with seating commonly around 16 passengers in typical layouts. The Enstrom 480B is a light single‑engine turbine helicopter focused on utility, training, and personal/agency missions. It has the shortest range here at roughly 250 to 300 nautical miles and usually carries 4 to 5 occupants including the pilot. The Robinson R66 is also a light single‑engine turbine helicopter, widely used for private, training, and light utility work. Its range is typically around 300 to 350 nautical miles, and it generally seats up to 5 occupants including the pilot.