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Beechcraft King Air 360 Er vs Bell 525 Relentless vs Daher Tbm 960 vs Piper M600 Sls

The Beechcraft King Air 360ER is a twin‑turboprop, pressurized business/utility aircraft aimed at longer regional missions with strong runway flexibility. It offers roughly 1,500–1,800 nm range depending on load and reserves, and typically carries 6–9 passengers in executive configurations (higher seating possible in commuter layouts). The Daher TBM 960 is a high‑performance single‑engine turboprop optimized for speed and efficiency rather than cabin volume. Typical range is about 1,400–1,700 nm, with passenger capacity generally 4–6 plus a pilot, depending on interior and payload. The Piper M600 SLS is also a pressurized single‑engine turboprop, positioned a step below the TBM in speed and cabin size. Range is commonly around 1,200–1,500 nm, with typical seating for 4–5 passengers plus a pilot. The Bell 525 Relentless is a large, fly‑by‑wire helicopter focused on point‑to‑point access and vertical operations rather than fixed‑wing efficiency. Its range is roughly 500–600 nm, with typical seating around 12–16 passengers depending on configuration.

SpecBell 525 RelentlessDaher TBM 960Piper M600 SLS
Summary
Cockpit222
Min Crew211
Total Seats1866
Flight RulesIFRIFRIFR
ManufacturerBellDaher TBMPiper
Aircraft Name525 RelentlessTBM 960M600
CertificationFAA / EASAFAA / EASAFAA / EASA
Max Range (nm)58017301406
Max Cabin Seats16
OEM VerificationVERIFIEDUn-VerifiedVERIFIED
Useful Load (lbs)667529082200
Standard Cabin Seats1644
Flight Deck (Base Spec)Garmin G5000HGarmin G3000Garmin G3000
Max Cruise Speed (ktas)160330274
Base Aircraft Price (USD)$15,000,000$4,450,000$3,081,400
DOC / nm$ 2.25$ 2.19
Aircraft TypeTurbo Prop
DOC / nm / Seat$ 0.56$ 0.55
Direct Operating Cost$ 744$ 603
Cabin
Cockpit222
Min Crew211
Total Seats1865
Max Cabin Seats16
Standard Cabin Seats1644
LavatoryNoNo
Galley LocationMIDMID
Cabin Pressure (psi)6.25.6
SL Cabin Altitude (ft)1439012600
Galley / RefreshmentRefreshment Centre
Max Cabin Altitude (ft)8644
Engine
FADECDual-ChannelYesNo
ModelCT7-2F1TBM 960PT6A-42A
Fuel TypeJetFuel
TBO (hrs)400035003600
Horsepower1800850600
No. of Engines21
Fuel Capacity (gal)641260
Flat RatingISA + 49ISA + 55
Dimensions
Width (ft)25.77
Length (ft)61.5835.329.7
Cabin Width (ft)7.5844.1
Cabin Height (ft)4.54.14
Cabin Length (ft)15.513.412.3
Overall Height (ft)18.1811.3
Rotor Diameter (ft)54.5
Baggage Volume Ext. (cu. ft)128
Wingspan (ft)42.143.2
Cabin Volume (cu. ft)123165
Baggage Volume Int. (cu. ft)20