Bell 525 Relentless vs Gulfstream G700 vs Piaggio Avanti Evo vs Piper M600 Sls
The Bell 525 Relentless is a fly-by-wire super‑medium helicopter aimed at offshore, corporate, and special-mission use. Its range is roughly in the 500–600 nautical mile class, and typical passenger capacity is around 16–19 depending on interior layout and mission equipment, trading speed and fixed-wing efficiency for vertical access and point-to-point convenience. The Gulfstream G700 is a long‑range large‑cabin business jet designed for intercontinental travel. It offers the greatest range by far, about 7,000+ nautical miles, and typically carries 10–19 passengers in high-comfort corporate configurations, emphasizing spacious cabin volume and nonstop global city pairs. The Piaggio Avanti EVO is a twin‑turboprop business aircraft positioned between light jets and traditional turboprops in speed and economics. Its range is typically around 1,500–1,800 nautical miles with about 6–7 passengers (plus crew), focusing on efficient cruise and a relatively roomy cabin for its footprint. The Piper M600 SLS is a single‑engine turboprop in the owner‑flown/entry business segment. Range is roughly around 1,000–1,400 nautical miles with about 5–6 passengers, prioritizing simplicity, operating cost, and personal transportation.
| Spec | Bell 525 Relentless | Gulfstream G700 | Piaggio Avanti EVO | Piper M600 SLS |
|---|---|---|---|---|
| Summary | ||||
| Cockpit | 2 | 3 | 2 | 2 |
| Min Crew | 2 | 4 | 1 | 1 |
| Total Seats | 18 | 16 | 8 | 6 |
| Flight Rules | IFR | — | IFR | IFR |
| Manufacturer | Bell | Gulfstream | Piaggio | Piper |
| Aircraft Name | 525 Relentless | G700 | Avanti EVO | M600 |
| Certification | FAA / EASA | In Development | FAA / EASA | FAA / EASA |
| Max Range (nm) | 580 | 7500 | 1530 | 1406 |
| Max Cabin Seats | 16 | 19 | 7 | — |
| OEM Verification | VERIFIED | Un-Verified | Un-Verified | VERIFIED |
| Useful Load (lbs) | 6675 | — | 3775 | 2200 |
| Standard Cabin Seats | 16 | 12 | 6 | 4 |
| Flight Deck (Base Spec) | Garmin G5000H | Gulfstream Symmetry Flight Deck | Rockwell Collins Pro Line 21 | Garmin G3000 |
| Max Cruise Speed (ktas) | 160 | 516 | 400 | 274 |
| Base Aircraft Price (USD) | $15,000,000 | $78,000,000 | $ 7,695,000 | $3,081,400 |
| DOC / nm | — | — | — | $ 2.19 |
| DOC / nm / Seat | — | — | — | $ 0.55 |
| Direct Operating Cost | — | — | — | $ 603 |
| Cabin | ||||
| Cockpit | 2 | 2 | 2 | 2 |
| Min Crew | 2 | 4 | 1 | 1 |
| Total Seats | 18 | 16 | 8 | 5 |
| Max Cabin Seats | 16 | 19 | 7 | — |
| Standard Cabin Seats | 16 | 12 | 6 | 4 |
| Crew Rest | — | Optional | — | — |
| Jump Seat | — | Yes | — | — |
| Galley Location | — | FWD | — | MID |
| Lavatory Location | — | FWD / AFT | — | — |
| 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 |
| Engine | ||||
| FADEC | Dual-Channel | — | Yes | No |
| Model | CT7-2F1 | Pearl 700 | 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 |
| Thrust (lbs) | — | 18250 | — | — |
| Flat Rating | — | — | ISA + 28 | ISA + 55 |
| Fuel Burn (gph) | — | — | 100 | — |
| Dimensions | ||||
| Width (ft) | 25.77 | — | — | — |
| Length (ft) | 61.58 | 109.9 | 47.3 | 29.7 |
| Cabin Width (ft) | 7.58 | 8.2 | 6.1 | 4.1 |
| Cabin Height (ft) | 4.5 | 6.25 | 5.8 | 4 |
| Cabin Length (ft) | 15.5 | 56.9 | 14.9 | 12.3 |
| Overall Height (ft) | 18.18 | 25.4 | 13.1 | 11.3 |
| Rotor Diameter (ft) | 54.5 | — | — | — |
| Baggage Volume Ext. (cu. ft) | 128 | — | — | — |
| Wingspan (ft) | — | 103 | 47.1 | 43.2 |
| Aisle Step (ft) | — | Flat Floor | — | — |
| Baggage Volume Int. (cu. ft) | — | 195 | 35.2 | 20 |
| Cabin Width - Floor (ft) | — | — | 3.5 | — |
| Cabin Volume (cu. ft) | — | — | — | 165 |