AIR.ONE

Airbus Helicopters H225 vs Bell 525 Relentless vs Cessna 208b Grand Caravan Ex vs Piper M600 Sls

The Airbus H225 and Bell 525 Relentless are large, twin‑engine helicopters aimed at offshore, SAR, and high‑end utility missions. Both typically carry around 16–19 passengers in transport layouts, with the H225 generally offering longer endurance in heavy-lift/offshore profiles, while the 525 targets similar missions with modern avionics and a comparable long-range capability for a helicopter class. The Cessna 208B Grand Caravan EX is a single‑engine turboprop airplane optimized for rugged short-field utility and regional hauling. It commonly seats about 9–14 passengers (depending on configuration and regulations) and typically offers roughly 900–1,200 nm range, often exceeding helicopters in cruise efficiency and range for comparable payloads. The Piper M600 SLS is a pressurized, single‑engine turboprop airplane focused on owner‑pilot and business travel. It seats up to 6 and is built for faster, longer personal transport, with typical range around 1,200–1,400 nm, trading passenger capacity for speed, comfort, and altitude capability.

SpecAIRBUS H225Bell 525 RelentlessPiper M600 SLS
Summary
Cockpit222
DOC / nm$ 20.87$ 2.19
Min Crew221
Total Seats21186
Flight RulesIFRIFRIFR
ManufacturerAirbus HelicoptersBellPiper
Aircraft NameH225525 RelentlessM600
CertificationFAA / EASAFAA / EASAFAA / EASA
Max Range (nm)4545801406
DOC / nm / Seat$ 0.99$ 0.55
Max Cabin Seats2816
OEM VerificationUn-VerifiedVERIFIEDVERIFIED
Useful Load (lbs)1192966752200
Standard Cabin Seats19164
Direct Operating Cost$ 2,963$ 603
Flight Deck (Base Spec)EFISGarmin G5000HGarmin G3000
Max Cruise Speed (ktas)142160274
Base Aircraft Price (USD)$ 29,500,000$15,000,000$3,081,400
Cabin
Cockpit222
Min Crew221
Total Seats21185
Max Cabin Seats2816
Standard Cabin Seats19164
LavatoryNo
Galley LocationMID
Cabin Pressure (psi)5.6
Galley / RefreshmentRefreshment Centre
SL Cabin Altitude (ft)12600
Max Cabin Altitude (ft)8644
Engine
FADECYesDual-ChannelNo
ModelMakila 2A1CT7-2F1PT6A-42A
Fuel TypeJetFuelJetFuel
TBO (hrs)350040003600
Horsepower21001800600
No. of Engines221
Fuel Capacity (gal)684641260
Flat RatingISA + 55
Dimensions
Length (ft)63.461.5829.7
Overall Height (ft)16.318.1811.3
Rotor Diameter (ft)53.254.5
Cabin Volume (cu. ft)547165
Width (ft)25.77
Cabin Width (ft)7.584.1
Cabin Height (ft)4.54
Cabin Length (ft)15.512.3
Baggage Volume Ext. (cu. ft)128
Wingspan (ft)43.2
Baggage Volume Int. (cu. ft)20