AIR.ONE

Beechcraft King Air 360 Er vs Bell 525 Relentless vs Cessna 208b Grand Caravan Ex vs Leonardo Aw189

The Beechcraft King Air 360ER is a pressurized twin‑turboprop fixed‑wing aircraft aimed at efficient business and utility missions; it offers long endurance for its class (roughly 1,500–1,800 nm depending on payload and reserves) and typically carries about 6–9 passengers in commuter/VIP layouts. The Bell 525 Relentless is a large, modern twin‑engine helicopter designed for offshore and executive transport; its practical range is generally in the 500–700 nm class with typical seating around 12–16 depending on configuration. The Cessna 208B Grand Caravan EX is a rugged single‑turboprop fixed‑wing utility aircraft optimized for short/rough strips; it usually carries 9–14 passengers and has a shorter but solid regional range (roughly 700–1,000 nm). The Leonardo AW189 is a heavy‑class twin helicopter focused on offshore/EMS/SAR; it commonly seats about 16–19 and has range broadly similar to the Bell 525 (often around 500–700 nm). Overall, the fixed‑wing turboprops generally win on range and operating economy, while the helicopters excel at vertical access and cabin flexibility.

SpecBell 525 RelentlessAGUSTA / LEONARDO AW189
Summary
Cockpit22
Min Crew21
Total Seats1821
Flight RulesIFRIFR
ManufacturerBellLeonardo
Aircraft Name525 RelentlessAW189
CertificationFAA / EASAFAA / EASA
Max Range (nm)580651
Max Cabin Seats1619
OEM VerificationVERIFIEDUn-Verified
Useful Load (lbs)6675
Standard Cabin Seats1619
Flight Deck (Base Spec)Garmin G5000HEFIS
Max Cruise Speed (ktas)160155
Base Aircraft Price (USD)$15,000,000$2,413,000
DOC / nm$ 15.57
DOC / nm / Seat$ 0.74
Direct Operating Cost$ 2,413
Cabin
Cockpit22
Min Crew21
Total Seats1821
Max Cabin Seats1619
Standard Cabin Seats1619
Engine
FADECDual-ChannelYes
ModelCT7-2F1CT7-2E1
Fuel TypeJetFuelJetFuel
TBO (hrs)40004000
Horsepower18001983
No. of Engines22
Fuel Capacity (gal)641
Dimensions
Width (ft)25.77
Length (ft)61.5857.8
Cabin Width (ft)7.58
Cabin Height (ft)4.5
Cabin Length (ft)15.5
Overall Height (ft)18.1816.6
Rotor Diameter (ft)54.548
Baggage Volume Ext. (cu. ft)12885
Cabin Volume (cu. ft)395