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Bell 525 Relentless vs Boeing Bbj Max 9 vs Piaggio Avanti Evo vs Piper M600 Sls

The Bell 525 Relentless is a fly-by-wire, twin‑engine helicopter optimized for vertical access rather than long runway-to-runway travel. It typically carries about 12–16 passengers depending on interior and has a range on the order of roughly 500–600 nautical miles, making it best for offshore, remote-site, or point-to-point missions where landing flexibility matters more than distance. The Boeing BBJ MAX 9 is a large, long-range VIP airliner based on the 737 MAX 9. It sits in an entirely different category: a business jetliner with intercontinental-style legs, commonly cited around roughly 3,200–3,600 nautical miles of range (configuration dependent) and VIP capacity that often falls in the few dozen range, while maximum seating in airline layout is far higher. The Piaggio Avanti EVO is a fast twin‑turboprop business aircraft, typically seating about 7–9 passengers, with range commonly around 1,400–1,800 nautical miles, bridging efficient regional missions with near-light-jet speeds. The Piper M600 SLS is a single‑engine turboprop in the personal/owner‑pilot class, usually carrying 5–6 passengers, with range around 1,200–1,500 nautical miles, emphasizing simplicity, cost efficiency, and short-field utility.

SpecBell 525 RelentlessBoeing BBJ MAX 9Piaggio Avanti EVOPiper M600 SLS
Summary
Cockpit2222
Min Crew2411
Total Seats181286
Flight RulesIFRIFRIFR
ManufacturerBellBoeingPiaggioPiper
Aircraft Name525 RelentlessBBJ MAX 9Avanti EVOM600
CertificationFAA / EASAFAA / EASAFAA / EASAFAA / EASA
Max Range (nm)580637615301406
Max Cabin Seats16357
OEM VerificationVERIFIEDVERIFIEDUn-VerifiedVERIFIED
Useful Load (lbs)66757712037752200
Standard Cabin Seats16864
Flight Deck (Base Spec)Garmin G5000HHoneywellRockwell Collins Pro Line 21Garmin G3000
Max Cruise Speed (ktas)160470400274
Base Aircraft Price (USD)$15,000,000$107,700,000$ 7,695,000$3,081,400
DOC / nm$ 15.74$ 2.19
DOC / nm / Seat$ 1.97$ 0.55
Direct Operating Cost$ 7,396$ 603
Cabin
Cockpit2222
Min Crew2411
Total Seats181085
Max Cabin Seats16357
Standard Cabin Seats16864
ConfigurationGreen Interior
Cabin Pressure (psi)995.6
SL Cabin Altitude (ft)240002400012600
LavatoryNoNo
Galley / RefreshmentNoRefreshment Centre
Max Cabin Altitude (ft)66008644
Galley LocationMID
Engine
FADECDual-ChannelYesYesNo
ModelCT7-2F1LEAP-1BPT6A–66BPT6A-42A
Fuel TypeJetFuel
TBO (hrs)4000On-Condition36003600
Horsepower1800850600
No. of Engines2221
Fuel Capacity (gal)641260
Flat RatingISA + 15ISA + 28ISA + 55
Thrust (lbs)28000
Fuel Burn (gph)100
Dimensions
Width (ft)25.77
Length (ft)61.58138.447.329.7
Cabin Width (ft)7.5811.66.14.1
Cabin Height (ft)4.57.15.84
Cabin Length (ft)15.5107.214.912.3
Overall Height (ft)18.1840.313.111.3
Rotor Diameter (ft)54.5
Baggage Volume Ext. (cu. ft)1281485
Wingspan (ft)117.947.143.2
Aisle Step (ft)Flat Floor
Cabin Width - Floor (ft)10.73.5
Cabin Length - Seating (ft)100.6
Baggage Volume Int. (cu. ft)35.220
Cabin Volume (cu. ft)165