| Tail Number / N-Number | N4439B |
| Manufacturer | BELL |
| Model | UH-1H |
| Manufacturer's Serial Number | 15419 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 15 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Type of Registrant | LLC |
| Owner Name | NORTHWEST HELICOPTERS LLC |
| Street | 1000 85TH AVE SE |
| City | OLYMPIA |
| State | WA |
| Zip Code | 98501-5707 |
| Region | Northwest Mountain |
| County | Thurston County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2015-12-31 |
| Last Action Date | 2021-07-14 |
| Expiration Date | 2028-12-31 |
| Status | Valid Registration |
| Mode S Code | 51254527 |
| Mode S Code Hex | A55957 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4439B.
| Tail Number / N-Number | N4439B |
| Manufacturer | CESSNA |
| Model | 170B |
| Manufacturer's Serial Number | 26783 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 105 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | CESSNA AIRCRAFT COMPANY |
| Street | GENERAL DELIVERY |
| City | WICHITA |
| State | KS |
| Zip Code | 67201 |
| Region | Central |
| County | Thurston County |
| Last Status | Valid Registration |
| Cancellation Date | 1955-05-09 |
| Exported To | COSTA RICA |