| Tail Number / N-Number | N4377X |
| Manufacturer | ROBINSON HELICOPTER COMPANY |
| Model | R44 II |
| Year Built | 2009 |
| Manufacturer's Serial Number | 12838 |
| 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 | LYCOMING |
| Engine Model | IO-540-AE1A5 |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 260 hp (194 kW) |
| Type of Registrant | LLC |
| Owner Name | DK AIR LLC |
| Street | 15564 STERLING HEIGHTS DR |
| City | BROOKINGS |
| State | OR |
| Zip Code | 97415-9579 |
| Region | Northwest Mountain |
| County | Curry County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2009-10-22 |
| Certificate Issue Date | 2012-02-22 |
| Last Action Date | 2020-10-07 |
| Expiration Date | 2028-02-29 |
| Status | Valid Registration |
| Mode S Code | 51240202 |
| Mode S Code Hex | A54082 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4377X.
| Tail Number / N-Number | N4377X |
| Manufacturer | PIPER |
| Model | PA-34-200T |
| Year Built | 1975 |
| Manufacturer's Serial Number | 34-7670035 |
| Aircraft Type | Fixed wing multi engine |
| 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 | CONT MOTOR |
| Engine Model | TSIO-360 SER |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 225 hp (168 kW) |
| Total Horsepower | 450 hp (336 kW) |
| Average Cruising Speed | 105 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | AIRPAC AIRLINES INC |
| Street | 7277 PERIMETER ROAD |
| City | SEATTLE |
| State | WA |
| Zip Code | 98108 |
| County | Curry County |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1977-09-19 |
| Certificate Issue Date | 1978-05-25 |
| Last Action Date | 2006-06-20 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 2006-08-07 |