| Tail Number / N-Number | N478NW |
| Manufacturer | HUGHES |
| Model | 369HS |
| Year Built | 1973 |
| Manufacturer's Serial Number | 530478S |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | ROLLS-ROYC |
| Engine Model | 250-C20B |
| Engine Type | Turbo-shaft |
| Number of Engines | 1 engine |
| Horsepower | 420 hp (313 kW) |
| Average Cruising Speed | 112 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | TMDS AIR INC |
| Street | 18906 107TH STREET CT NW |
| City | GIG HARBOR |
| State | WA |
| Zip Code | 98329-5590 |
| Region | Northwest Mountain |
| County | Pierce County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2020-09-30 |
| Certificate Issue Date | 2018-10-02 |
| Last Action Date | 2021-05-17 |
| Expiration Date | 2028-10-31 |
| Status | Valid Registration |
| Mode S Code | 51360023 |
| Mode S Code Hex | A5E013 |