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Beechcraft King Air 360 Er vs Bell 525 Relentless vs Gulfstream G700 vs Piper M600 Sls

The Beechcraft King Air 360ER is a twin‑turboprop business aircraft suited to short and medium missions from shorter runways. It typically carries about 6–9 passengers and offers roughly 2,000–2,400 nm range depending on payload and reserves. The Bell 525 Relentless is a fly‑by‑wire super‑medium helicopter aimed at offshore and executive transport; it generally seats about 12–16 passengers and has about 500–700 nm range with reserves, trading speed and altitude for point‑to‑point access without airports. The Gulfstream G700 is an ultra‑long‑range large‑cabin business jet designed for intercontinental flying, commonly configured for about 10–19 passengers, with published range around 7,500 nm, emphasizing high speed, high altitude, and maximum cabin space. The Piper M600 SLS is a single‑engine turboprop positioned as an owner‑pilot aircraft; it typically carries about 4–6 passengers and delivers roughly 1,000–1,600 nm range depending on loading, offering lower operating costs and simpler access than jets but less payload and speed than the King Air or G700.

SpecBell 525 RelentlessGulfstream G700Piper M600 SLS
Summary
Cockpit232
Min Crew241
Total Seats18166
Flight RulesIFRIFR
ManufacturerBellGulfstreamPiper
Aircraft Name525 RelentlessG700M600
CertificationFAA / EASAIn DevelopmentFAA / EASA
Max Range (nm)58075001406
Max Cabin Seats1619
OEM VerificationVERIFIEDUn-VerifiedVERIFIED
Useful Load (lbs)66752200
Standard Cabin Seats16124
Flight Deck (Base Spec)Garmin G5000HGulfstream Symmetry Flight DeckGarmin G3000
Max Cruise Speed (ktas)160516274
Base Aircraft Price (USD)$15,000,000$78,000,000$3,081,400
DOC / nm$ 2.19
DOC / nm / Seat$ 0.55
Direct Operating Cost$ 603
Cabin
Cockpit222
Min Crew241
Total Seats18165
Max Cabin Seats1619
Standard Cabin Seats16124
Crew RestOptional
Jump SeatYes
Galley LocationFWDMID
Lavatory LocationFWD / AFT
LavatoryNo
Cabin Pressure (psi)5.6
Galley / RefreshmentRefreshment Centre
SL Cabin Altitude (ft)12600
Max Cabin Altitude (ft)8644
Engine
FADECDual-ChannelNo
ModelCT7-2F1Pearl 700PT6A-42A
Fuel TypeJetFuel
TBO (hrs)4000On Condition3600
Horsepower1800600
No. of Engines221
Fuel Capacity (gal)641260
Thrust (lbs)18250
Flat RatingISA + 55
Dimensions
Width (ft)25.77
Length (ft)61.58109.929.7
Cabin Width (ft)7.588.24.1
Cabin Height (ft)4.56.254
Cabin Length (ft)15.556.912.3
Overall Height (ft)18.1825.411.3
Rotor Diameter (ft)54.5
Baggage Volume Ext. (cu. ft)128
Wingspan (ft)10343.2
Aisle Step (ft)Flat Floor
Baggage Volume Int. (cu. ft)19520
Cabin Volume (cu. ft)165