| Summary |
| Cockpit | 2 | 2 | — |
| DOC / nm | $ 3.49 | $ 2.95 | $ 2.36 |
| Min Crew | 1 | 1 | — |
| Total Seats | 5 | 4 | 4 |
| Flight Rules | VFR | VFR | VFR |
| Manufacturer | Robinson Helicopters | MD Helicotpers | Robinson Helicopters |
| Aircraft Name | R66 | MD 500E | R44 Raven II |
| Certification | FAA / EASA | FAA / EASA | FAA / EASA |
| Max Range (nm) | 350 | 258 | 300 |
| DOC / nm / Seat | $ 0.70 | $ 0.74 | $ 0.59 |
| OEM Verification | Un-Verified | Un-Verified | Un-Verified |
| Useful Load (lbs) | 1355 | 1483 | 995 |
| Standard Cabin Seats | 3 | 2 | — |
| Direct Operating Cost | $ 384 | $ 398 | $ 257 |
| Flight Deck (Base Spec) | Gyro / Analog | Gyro / Analog | Gyro / Analog |
| Max Cruise Speed (ktas) | 110 | 135 | 109 |
| Base Aircraft Price (USD) | $ 920,000 | $ 2,750,000 | $ 490,000 |
| Max Cabin Seats | — | 3 | — |
| Cabin |
| Cockpit | 2 | 2 | — |
| Min Crew | 1 | 1 | — |
| Total Seats | 5 | 4 | 4 |
| Standard Cabin Seats | 3 | 2 | — |
| Max Cabin Seats | — | 3 | — |
| Engine |
| FADEC | No | No | No |
| Model | RR300 | 250-C20B | IO-540 |
| Fuel Type | JetFuel | JetFuel | AvGas |
| TBO (hrs) | 2000 | 3500 | 2200 |
| Horsepower | 300 | 420 | 245 |
| No. of Engines | 1 | 1 | 1 |
| Fuel Capacity (gal) | 73.6 | 64 | 29.5 |
| Fuel Burn (gph) | — | 35 | — |
| TBO (yrs) | — | — | 12 |
| Fuel Delivery | — | — | Fuel Injected |
| Dimensions |
| Length (ft) | 38.3 | 30.9 | 38.3 |
| Overall Height (ft) | 11.4 | 8.7 | 10.8 |
| Rotor Diameter (ft) | 33 | 26.4 | 33 |
| Cabin Volume (cu. ft) | 50 | — | — |
| Baggage Volume Ext. (cu. ft) | 18 | — | — |
| Baggage Volume Int. (cu. ft) | — | — | 2.5 |
