| Summary |
| Cockpit | 2 | — | — |
| DOC / nm | $ 3.49 | $ 2.36 | $ 2.30 |
| Min Crew | 1 | — | — |
| Total Seats | 5 | 4 | 4 |
| Flight Rules | VFR | VFR | VFR |
| Manufacturer | Robinson Helicopters | Robinson Helicopters | Robinson Helicopters |
| Aircraft Name | R66 | R44 Raven II | R44 Raven I |
| Certification | FAA / EASA | FAA / EASA | FAA / EASA |
| Max Range (nm) | 350 | 300 | 300 |
| DOC / nm / Seat | $ 0.70 | $ 0.59 | $ 0.57 |
| OEM Verification | Un-Verified | Un-Verified | Un-Verified |
| Useful Load (lbs) | 1355 | 995 | 950 |
| Standard Cabin Seats | 3 | — | — |
| Direct Operating Cost | $ 384 | $ 257 | $ 248 |
| Flight Deck (Base Spec) | Gyro / Analog | Gyro / Analog | Gyro / Analog |
| Max Cruise Speed (ktas) | 110 | 109 | 108 |
| Base Aircraft Price (USD) | $ 920,000 | $ 490,000 | $ 412,000 |
| Cabin |
| Cockpit | 2 | — | — |
| Min Crew | 1 | — | — |
| Total Seats | 5 | 4 | 4 |
| Standard Cabin Seats | 3 | — | — |
| Engine |
| FADEC | No | No | No |
| Model | RR300 | IO-540 | O-540 |
| Fuel Type | JetFuel | AvGas | AvGas |
| TBO (hrs) | 2000 | 2200 | 2200 |
| Horsepower | 300 | 245 | 225 |
| No. of Engines | 1 | 1 | 1 |
| Fuel Capacity (gal) | 73.6 | 29.5 | 29.5 |
| TBO (yrs) | — | 12 | 12 |
| Fuel Delivery | — | Fuel Injected | Carbureted |
| Dimensions |
| Length (ft) | 38.3 | 38.3 | 38.3 |
| Overall Height (ft) | 11.4 | 10.8 | 10.8 |
| Rotor Diameter (ft) | 33 | 33 | 33 |
| Cabin Volume (cu. ft) | 50 | — | — |
| Baggage Volume Ext. (cu. ft) | 18 | — | — |
| Baggage Volume Int. (cu. ft) | — | 2.5 | 2.5 |
