Bell 525 Relentless vs Embraer Legacy 650 E vs Piaggio Avanti Evo vs Piper M600 Sls
The Bell 525 Relentless is a fly-by-wire, long-range helicopter aimed at offshore, corporate shuttle, and SAR-style missions. It typically carries around 12–16 passengers depending on layout, with range on the order of roughly 500–600 nautical miles, trading cruise speed and cabin volume against the flexibility of vertical lift. The Embraer Legacy 650E is a large-cabin business jet in a different class altogether, optimized for long, high-speed trips. It commonly seats about 13 passengers in executive configuration and offers transcontinental range around 3,900 nautical miles, making it the clear leader here for range and cruise capability. The Piaggio Avanti EVO is a high-speed twin-turboprop business aircraft, usually configured for about 6–9 passengers. Its range is generally in the ~1,400–1,800 nautical mile bracket, positioning it between the helicopter and the large jet, with strong speed-efficiency for short to mid-length routes. The Piper M600 SLS is a single-engine turboprop, typically carrying 1–5 passengers plus a pilot, with range roughly ~1,200–1,500 nautical miles, prioritizing owner-operator simplicity over cabin size.
| Spec | Bell 525 Relentless | Piaggio Avanti EVO | Piper M600 SLS |
|---|---|---|---|
| Summary | |||
| Cockpit | 2 | 2 | 2 |
| Min Crew | 2 | 1 | 1 |
| Total Seats | 18 | 8 | 6 |
| Flight Rules | IFR | IFR | IFR |
| Manufacturer | Bell | Piaggio | Piper |
| Aircraft Name | 525 Relentless | Avanti EVO | M600 |
| Certification | FAA / EASA | FAA / EASA | FAA / EASA |
| Max Range (nm) | 580 | 1530 | 1406 |
| Max Cabin Seats | 16 | 7 | — |
| OEM Verification | VERIFIED | Un-Verified | VERIFIED |
| Useful Load (lbs) | 6675 | 3775 | 2200 |
| Standard Cabin Seats | 16 | 6 | 4 |
| Flight Deck (Base Spec) | Garmin G5000H | Rockwell Collins Pro Line 21 | Garmin G3000 |
| Max Cruise Speed (ktas) | 160 | 400 | 274 |
| Base Aircraft Price (USD) | $15,000,000 | $ 7,695,000 | $3,081,400 |
| DOC / nm | — | — | $ 2.19 |
| DOC / nm / Seat | — | — | $ 0.55 |
| Direct Operating Cost | — | — | $ 603 |
| Cabin | |||
| Cockpit | 2 | 2 | 2 |
| Min Crew | 2 | 1 | 1 |
| Total Seats | 18 | 8 | 5 |
| Max Cabin Seats | 16 | 7 | — |
| Standard Cabin Seats | 16 | 6 | 4 |
| Lavatory | — | No | No |
| Cabin Pressure (psi) | — | 9 | 5.6 |
| Galley / Refreshment | — | No | Refreshment Centre |
| SL Cabin Altitude (ft) | — | 24000 | 12600 |
| Max Cabin Altitude (ft) | — | 6600 | 8644 |
| Galley Location | — | — | MID |
| Engine | |||
| FADEC | Dual-Channel | Yes | No |
| Model | CT7-2F1 | PT6A–66B | PT6A-42A |
| Fuel Type | JetFuel | — | — |
| TBO (hrs) | 4000 | 3600 | 3600 |
| Horsepower | 1800 | 850 | 600 |
| No. of Engines | 2 | 2 | 1 |
| Fuel Capacity (gal) | 641 | — | 260 |
| Flat Rating | — | ISA + 28 | ISA + 55 |
| Fuel Burn (gph) | — | 100 | — |
| Dimensions | |||
| Width (ft) | 25.77 | — | — |
| Length (ft) | 61.58 | 47.3 | 29.7 |
| Cabin Width (ft) | 7.58 | 6.1 | 4.1 |
| Cabin Height (ft) | 4.5 | 5.8 | 4 |
| Cabin Length (ft) | 15.5 | 14.9 | 12.3 |
| Overall Height (ft) | 18.18 | 13.1 | 11.3 |
| Rotor Diameter (ft) | 54.5 | — | — |
| Baggage Volume Ext. (cu. ft) | 128 | — | — |
| Wingspan (ft) | — | 47.1 | 43.2 |
| Cabin Width - Floor (ft) | — | 3.5 | — |
| Baggage Volume Int. (cu. ft) | — | 35.2 | 20 |
| Cabin Volume (cu. ft) | — | — | 165 |