Compare Beechcraft King Air 360 vs Bell 525 Relentless vs Leonardo AW139 vs Piaggio Avanti EVO
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| Manufacturer | Beechcraft | Bell | Leonardo | Piaggio |
| Aircraft Type | KingAir 350i | 525 Relentless | AW139 | Avanti EVO |
| Base Aircraft Price (USD) | $7,650,000 | $15,000,000 | $15,900,000 | $ 7,695,000 |
| Direct Operating Cost | $ 1,311 | - | $ 1,929 | - |
| DOC / nm | $ 4.20 | - | $ 11.69 | - |
| DOC / nm / Seat | $ 0.53 | - | $ 0.69 | - |
| Max Cruise Speed (ktas) | 312 | 160 | 165 | 400 |
| Max Range (nm) | 1560 | 580 | 573 | 1530 |
| Useful Load (lbs) | 5145 | 6675 | 4701 | 3775 |
| Total Seats | 10 | 18 | 17 | 8 |
| Cockpit | 2 | 2 | 2 | 2 |
| Standard Cabin Seats | 8 | 16 | 15 | 6 |
| Max Cabin Seats | 9 | 16 | 15 | 7 |
| Min Crew | 1 | 2 | 2 | 1 |
| Flight Deck (Base Spec) | Rockwell Collins Pro Line Fusion | Garmin G5000H | EFIS | Rockwell Collins Pro Line 21 |
| Flight Rules | IFR | IFR | IFR | IFR |
| Certification | FAA / EASA | FAA / EASA | FAA / EASA | FAA / EASA |
| OEM Verification | VERIFIED | VERIFIED | Un-Verified | Un-Verified |
| Weights | ||||
| MRAMP (lbs) | 15100 | - | - | 12150 |
| MTOW (lbs) | 15000 | 20500 | 15430 | 12100 |
| MTOW External Load (lbs) | - | 21500 | - | - |
| Max External Load (lbs) | - | 7000 | - | - |
| MLW (lbs) | 15000 | - | - | 11500 |
| MZFW (lbs) | 12500 | - | - | 9800 |
| BOW (lbs) | 9955 | - | 9409 | 8375 |
| BEW (lbs) | 9855 | 13825 | 7985 | 8325 |
| Useful Load (lbs) | 5145 | 6675 | 4701 | 3775 |
| Max Payload (lbs) | 2545 | - | - | 1425 |
| Fuel Capacity (lbs) | 3611 | 4294.7 | 3276 | 2802 |
| Useful Load Max Fuel (lbs) | - | 2380 | 1937 | - |
| Payload Max Fuel (lbs) | 1534 | - | - | 973 |
| Max Baggage Weight (lbs) | 1150 | - | - | 350 |
| Dimensions | ||||
| Wingspan (ft) | 57.9 | - | - | 47.1 |
| Rotor Diameter (ft) | - | 54.5 | 54.7 | - |
| Width (ft) | - | 25.77 | - | - |
| Overall Height (ft) | 14.4 | 18.18 | 16.4 | 13.1 |
| Length (ft) | 46.7 | 61.58 | 54.7 | 47.3 |
| Cabin Height (ft) | 4.8 | 4.5 | - | 5.8 |
| Cabin Width (ft) | 4.5 | 7.58 | - | 6.1 |
| Cabin Width - Floor (ft) | 4.1 | - | - | 3.5 |
| Cabin Length (ft) | 19.5 | 15.5 | - | 14.9 |
| Cabin Length - Seating (ft) | 19.5 | - | - | - |
| Cabin Volume (cu. ft) | - | - | 282 | - |
| Baggage Volume Int. (cu. ft) | 71 | - | - | 35.2 |
| Baggage Volume Ext. (cu. ft) | - | 128 | 120 | - |
| Engine | ||||
| No. of Engines | 1 | 2 | 2 | 2 |
| Manufacturer | Beechcraft | Bell | Leonardo | Piaggio |
| Model | PT6A-60A | CT7-2F1 | PT6C-67C | PT6A–66B |
| Horsepower | 1050 | 1800 | 1679 | 850 |
| Flat Rating | ISA + 10 | - | - | ISA + 28 |
| FADEC | Yes | Dual-Channel | Yes | Yes |
| TBO (hrs) | 3600 | 4000 | 5000 | 3600 |
| Fuel Type | - | JetFuel | JetFuel | - |
| Fuel Capacity (gal) | 539 | 641 | 414 | - |
| Fuel Burn (gph) | - | - | - | 100 |
| Avionics | ||||
| Flight Deck | Rockwell Collins Pro Line Fusion | Garmin G5000H | EFIS | Rockwell Collins Pro Line 21 |
| Flight Rules | IFR | IFR | IFR | IFR |
| FMS | 2 | 2 | 2 | - |
| Autopilot | 1 | 1 x 4-Axis | 2 | - |
| PFD | 2 | 2 | - | - |
| MFD | 1 | 2 | - | - |
| GPS | 1 | 2 | 1 | - |
| AHRS | 1 | 3 | - | - |
| Flight Director | - | 3 | - | - |
| ADC | - | 3 | - | - |
| Transponder | 1 | 2 | 1 | - |
| VHF Com | 2 | 2 | 1 | - |
| VHF NAV | 2 | 2 | 1 | - |
| Cabin | ||||
| Total Seats | 10 | 18 | 17 | 8 |
| Cockpit | 2 | 2 | 2 | 2 |
| Standard Cabin Seats | 8 | 16 | 15 | 6 |
| Max Cabin Seats | 9 | 16 | 15 | 7 |
| Min Crew | 1 | 2 | 2 | 1 |
| Lavatory | Optional | - | - | No |
| Lavatory Location | AFT | - | - | - |
| Galley / Refreshment | Optional | - | - | No |
| Galley Location | FWD | - | - | - |
| Max Cabin Altitude (ft) | - | - | - | 6600 |
| SL Cabin Altitude (ft) | - | - | - | 24000 |
| Cabin Pressure (psi) | 6.5 | - | - | 9 |
| Other | ||||
| Prop Manufacturer | Hartzell | - | - | Hartzell |
| Prop Description | 4-Blade Constant Feathering Reverse | - | - | Scimitar |
| Gear Type | Retractable | Retractable Wheel | Retractable Wheels | Retractable |
| Rotorhead | - | 5-Blade Articulated | 5-Blade Articulated | - |
| Tail Rotor | - | 4-Blade | 4-Blade | - |
| Warranty | ||||
| Pilot Training Credits | - | 1 | - | - |
| MTX Training Credits | - | 1 | - | - |
| Airframe (Yrs) | - | 3 | - | - |
| Airframe (Hrs) | - | 1000 | - | - |
| Engine (Hrs) | - | 1000 | - | - |
| Performance | ||||
| Max Cruise Speed (Mach) | 0.58 | - | - | 0.7 |
| Max Cruise Speed (ktas) | 312 | 160 | 165 | 400 |
| Long Range Cruise (ktas) | 235 | 145 | 140 | 318 |
| Vref (kias) | 100 | - | - | - |
| Max Speed (Vne) | - | 175 | 167 | - |
| Stall Speed - Clean (kias) | 82 | - | - | - |
| Max Range (nm) | 1560 | 580 | 573 | 1530 |
| Range Seats Full (nm) | - | 560 | 302 | - |
| Max Range Crew + 4 (nm) | 1533 | - | - | - |
| Take-off FL (ft) | 3300 | - | - | - |
| Take-off Roll (ft) | - | - | - | 3262 |
| Take-Off (5000 / ISA + 10) | 5376 | - | - | 4700 |
| Landing >50ft Obst. (ft) | 2692 | - | - | 3282 |
| Max Climb Rate (fpm) | 2731 | - | 2140 | 2770 |
| Service Ceiling (ft) | 35000 | 12000 | 20000 | 41000 |
| Hover IGE (ft) | - | 10700 | 15360 | - |
| Hover OGE (ft) | - | 8100 | 8130 | - |