AIR.ONE

Bell 525 Relentless vs Gulfstream G700 vs Leonardo Aw189 vs Piper M600 Sls

The Bell 525 Relentless and Leonardo AW189 are modern twin‑engine helicopters aimed at offshore, utility, and VIP missions. Both typically carry around 16–19 passengers depending on seating and interior fit, with real‑world mission ranges generally in the few‑hundred‑nautical‑mile class and extended range possible with auxiliary fuel; the AW189 is widely proven in service, while the 525 targets similar roles with fly‑by‑wire ambitions and comparable cabin capacity. The Gulfstream G700 is a long‑range large‑cabin business jet in a different category entirely, optimized for intercontinental travel. It carries a typical executive load roughly in the low‑ to mid‑teens (often configured for about 13–19), but with vastly greater range—about 7,500 nautical miles class—enabling nonstop transoceanic missions at high speed and altitude. The Piper M600 SLS is a single‑engine turboprop personal/business aircraft. It seats up to about six, with range roughly around 1,400–1,500 nautical miles, sitting between the helicopters and the G700 in range but well below the G700 in speed, cabin volume, and passenger capacity.

SpecBell 525 RelentlessGulfstream G700AGUSTA / LEONARDO AW189Piper M600 SLS
Summary
Cockpit2322
Min Crew2411
Total Seats1816216
Flight RulesIFR—IFRIFR
ManufacturerBellGulfstreamLeonardoPiper
Aircraft Name525 RelentlessG700AW189M600
CertificationFAA / EASAIn DevelopmentFAA / EASAFAA / EASA
Max Range (nm)58075006511406
Max Cabin Seats161919—
OEM VerificationVERIFIEDUn-VerifiedUn-VerifiedVERIFIED
Useful Load (lbs)6675——2200
Standard Cabin Seats1612194
Flight Deck (Base Spec)Garmin G5000HGulfstream Symmetry Flight DeckEFISGarmin G3000
Max Cruise Speed (ktas)160516155274
Base Aircraft Price (USD)$15,000,000$78,000,000$2,413,000$3,081,400
DOC / nm——$ 15.57$ 2.19
DOC / nm / Seat——$ 0.74$ 0.55
Direct Operating Cost——$ 2,413$ 603
Cabin
Cockpit2222
Min Crew2411
Total Seats1816215
Max Cabin Seats161919—
Standard Cabin Seats1612194
Crew Rest—Optional——
Jump Seat—Yes——
Galley Location—FWD—MID
Lavatory Location—FWD / AFT——
Lavatory———No
Cabin Pressure (psi)———5.6
Galley / Refreshment———Refreshment Centre
SL Cabin Altitude (ft)———12600
Max Cabin Altitude (ft)———8644
Engine
FADECDual-Channel—YesNo
ModelCT7-2F1Pearl 700CT7-2E1PT6A-42A
Fuel TypeJetFuel—JetFuel—
TBO (hrs)4000On Condition40003600
Horsepower1800—1983600
No. of Engines2221
Fuel Capacity (gal)641——260
Thrust (lbs)—18250——
Flat Rating———ISA + 55
Dimensions
Width (ft)25.77———
Length (ft)61.58109.957.829.7
Cabin Width (ft)7.588.2—4.1
Cabin Height (ft)4.56.25—4
Cabin Length (ft)15.556.9—12.3
Overall Height (ft)18.1825.416.611.3
Rotor Diameter (ft)54.5—48—
Baggage Volume Ext. (cu. ft)128—85—
Wingspan (ft)—103—43.2
Aisle Step (ft)—Flat Floor——
Baggage Volume Int. (cu. ft)—195—20
Cabin Volume (cu. ft)——395165