AIR.ONE

Bell 525 Relentless vs Embraer Legacy 650 E vs Enstrom 480b vs Piper M600 Sls

The Bell 525 Relentless is a large, fly-by-wire twin‑engine helicopter aimed at offshore and executive transport; it typically carries around a dozen-plus passengers (depending on layout) and is built for medium-to-long helicopter missions, with range generally in the high hundreds of nautical miles. The Enstrom 480B is a much smaller single‑engine piston helicopter in the utility/training/touring class; it seats about five and has a comparatively short range, roughly a couple of hundred nautical miles. Among the fixed‑wing options, the Embraer Legacy 650E is a large-cabin business jet designed for intercontinental missions; it commonly accommodates around 13 passengers (with maximum configurations higher) and offers several thousand nautical miles of range, far beyond the helicopters and the single‑engine turboprop. The Piper M600 SLS is a single‑engine turboprop personal/business aircraft; it seats up to six and is intended for regional travel with range around the low‑to‑mid thousand nautical miles—less than the Legacy 650E, but substantially more than the Enstrom and typically more than the Bell 525.

SpecBell 525 RelentlessPiper M600 SLS
Summary
Cockpit22
Min Crew21
Total Seats186
Flight RulesIFRIFR
ManufacturerBellPiper
Aircraft Name525 RelentlessM600
CertificationFAA / EASAFAA / EASA
Max Range (nm)5801406
Max Cabin Seats16
OEM VerificationVERIFIEDVERIFIED
Useful Load (lbs)66752200
Standard Cabin Seats164
Flight Deck (Base Spec)Garmin G5000HGarmin G3000
Max Cruise Speed (ktas)160274
Base Aircraft Price (USD)$15,000,000$3,081,400
DOC / nm$ 2.19
DOC / nm / Seat$ 0.55
Direct Operating Cost$ 603
Cabin
Cockpit22
Min Crew21
Total Seats185
Max Cabin Seats16
Standard Cabin Seats164
LavatoryNo
Galley LocationMID
Cabin Pressure (psi)5.6
Galley / RefreshmentRefreshment Centre
SL Cabin Altitude (ft)12600
Max Cabin Altitude (ft)8644
Engine
FADECDual-ChannelNo
ModelCT7-2F1PT6A-42A
Fuel TypeJetFuel
TBO (hrs)40003600
Horsepower1800600
No. of Engines21
Fuel Capacity (gal)641260
Flat RatingISA + 55
Dimensions
Width (ft)25.77
Length (ft)61.5829.7
Cabin Width (ft)7.584.1
Cabin Height (ft)4.54
Cabin Length (ft)15.512.3
Overall Height (ft)18.1811.3
Rotor Diameter (ft)54.5
Baggage Volume Ext. (cu. ft)128
Wingspan (ft)43.2
Cabin Volume (cu. ft)165
Baggage Volume Int. (cu. ft)20