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.
| Spec | Bell 525 Relentless | Boeing BBJ MAX 9 | Piaggio Avanti EVO | Piper M600 SLS |
|---|---|---|---|---|
| Summary | ||||
| Cockpit | 2 | 2 | 2 | 2 |
| Min Crew | 2 | 4 | 1 | 1 |
| Total Seats | 18 | 12 | 8 | 6 |
| Flight Rules | IFR | — | IFR | IFR |
| Manufacturer | Bell | Boeing | Piaggio | Piper |
| Aircraft Name | 525 Relentless | BBJ MAX 9 | Avanti EVO | M600 |
| Certification | FAA / EASA | FAA / EASA | FAA / EASA | FAA / EASA |
| Max Range (nm) | 580 | 6376 | 1530 | 1406 |
| Max Cabin Seats | 16 | 35 | 7 | — |
| OEM Verification | VERIFIED | VERIFIED | Un-Verified | VERIFIED |
| Useful Load (lbs) | 6675 | 77120 | 3775 | 2200 |
| Standard Cabin Seats | 16 | 8 | 6 | 4 |
| Flight Deck (Base Spec) | Garmin G5000H | Honeywell | Rockwell Collins Pro Line 21 | Garmin G3000 |
| Max Cruise Speed (ktas) | 160 | 470 | 400 | 274 |
| 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 | ||||
| Cockpit | 2 | 2 | 2 | 2 |
| Min Crew | 2 | 4 | 1 | 1 |
| Total Seats | 18 | 10 | 8 | 5 |
| Max Cabin Seats | 16 | 35 | 7 | — |
| Standard Cabin Seats | 16 | 8 | 6 | 4 |
| Configuration | — | Green Interior | — | — |
| Cabin Pressure (psi) | — | 9 | 9 | 5.6 |
| SL Cabin Altitude (ft) | — | 24000 | 24000 | 12600 |
| Lavatory | — | — | No | No |
| Galley / Refreshment | — | — | No | Refreshment Centre |
| Max Cabin Altitude (ft) | — | — | 6600 | 8644 |
| Galley Location | — | — | — | MID |
| Engine | ||||
| FADEC | Dual-Channel | Yes | Yes | No |
| Model | CT7-2F1 | LEAP-1B | PT6A–66B | PT6A-42A |
| Fuel Type | JetFuel | — | — | — |
| TBO (hrs) | 4000 | On-Condition | 3600 | 3600 |
| Horsepower | 1800 | — | 850 | 600 |
| No. of Engines | 2 | 2 | 2 | 1 |
| Fuel Capacity (gal) | 641 | — | — | 260 |
| Flat Rating | — | ISA + 15 | ISA + 28 | ISA + 55 |
| Thrust (lbs) | — | 28000 | — | — |
| Fuel Burn (gph) | — | — | 100 | — |
| Dimensions | ||||
| Width (ft) | 25.77 | — | — | — |
| Length (ft) | 61.58 | 138.4 | 47.3 | 29.7 |
| Cabin Width (ft) | 7.58 | 11.6 | 6.1 | 4.1 |
| Cabin Height (ft) | 4.5 | 7.1 | 5.8 | 4 |
| Cabin Length (ft) | 15.5 | 107.2 | 14.9 | 12.3 |
| Overall Height (ft) | 18.18 | 40.3 | 13.1 | 11.3 |
| Rotor Diameter (ft) | 54.5 | — | — | — |
| Baggage Volume Ext. (cu. ft) | 128 | 1485 | — | — |
| Wingspan (ft) | — | 117.9 | 47.1 | 43.2 |
| Aisle Step (ft) | — | Flat Floor | — | — |
| Cabin Width - Floor (ft) | — | 10.7 | 3.5 | — |
| Cabin Length - Seating (ft) | — | 100.6 | — | — |
| Baggage Volume Int. (cu. ft) | — | — | 35.2 | 20 |
| Cabin Volume (cu. ft) | — | — | — | 165 |