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Beechcraft King Air 260 vs Piper M600 Sls

The Beechcraft King Air 260 and Piper M600 SLS both occupy the high-end turboprop market, but they target different mission profiles. The King Air 260 is a twin‑engine turboprop in the light business/utility category, designed with redundancy and flexibility for corporate shuttle, special missions, and operations into more challenging airports. The M600 SLS is a single‑engine turboprop in the personal/business category, emphasizing owner‑pilot simplicity and lower operating complexity while still offering true business-travel capability. In range, the M600 SLS is typically competitive for long, nonstop trips in its class, commonly advertised around the 1,500‑nautical‑mile neighborhood depending on power settings and payload, while the King Air 260 is generally quoted in a similar broad band (often roughly 1,500–1,700 nautical miles) but can vary more with cabin load and reserves. For passenger capacity, the King Air 260 usually carries more people, commonly seating six to nine depending on configuration, whereas the M600 SLS is typically arranged for about five to six seats with a focus on comfort and baggage for fewer occupants.

SpecBeechcraft King Air 260Piper M600 SLS
Summary
Cockpit22
DOC / nm$ 4.30$ 2.19
Min Crew11
Total Seats86
Flight RulesIFRIFR
ManufacturerBeechcraftPiper
Aircraft NameKingAir 250M600
CertificationFAA / EASAFAA / EASA
Max Range (nm)14201406
DOC / nm / Seat$ 0.72$ 0.55
Max Cabin Seats8
OEM VerificationVERIFIEDVERIFIED
Useful Load (lbs)37602200
Standard Cabin Seats64
Direct Operating Cost$ 1,333$ 603
Flight Deck (Base Spec)Rockwell Collins Pro Line FusionGarmin G3000
Max Cruise Speed (ktas)310274
Base Aircraft Price (USD)$6,450,000$3,081,400
Cabin
Cockpit22
Lavatory1 FlushingNo
Min Crew11
Total Seats85
Max Cabin Seats8
Lavatory LocationAFT
Cabin Pressure (psi)6.55.6
Galley / RefreshmentNoRefreshment Centre
Standard Cabin Seats64
SL Cabin Altitude (ft)1529312600
Galley LocationMID
Max Cabin Altitude (ft)8644
Engine
FADECYesNo
ModelPT6A-52PT6A-42A
TBO (hrs)36003600
Horsepower850600
Flat RatingISA + 37ISA + 55
No. of Engines11
Fuel Capacity (gal)544260
Dimensions
Length (ft)43.829.7
Wingspan (ft)57.943.2
Cabin Width (ft)4.54.1
Cabin Height (ft)4.84
Cabin Length (ft)16.712.3
Overall Height (ft)14.811.3
Cabin Width - Floor (ft)4.1
Cabin Length - Seating (ft)16.7
Baggage Volume Int. (cu. ft)5520
Cabin Volume (cu. ft)165