| Tail Number / N-Number | N859MB |
| Manufacturer | AMERICAN EUROCOPTER CORP |
| Model | AS350B3 |
| Year Built | 2013 |
| Manufacturer's Serial Number | 7685 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 7 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | TURBOMECA |
| Engine Model | ARRIEL 2D |
| Engine Type | Turbo-shaft |
| Number of Engines | 1 engine |
| Horsepower | 802 hp (598 kW) |
| Type of Registrant | LLC |
| Owner Name | REACH AIR MEDICAL SERVICES LLC |
| Street | 2360 BECKER BLVD |
| City | SANTA ROSA |
| State | CA |
| Zip Code | 95403-8270 |
| Region | Western-Pacific |
| County | Sonoma County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2013-09-12 |
| Certificate Issue Date | 2018-04-12 |
| Last Action Date | 2020-11-16 |
| Expiration Date | 2028-04-30 |
| Status | Valid Registration |
| Mode S Code | 52744734 |
| Mode S Code Hex | ABC9DC |