| Tail Number / N-Number | N4503K |
| Manufacturer | RYAN |
| Model | NAVION |
| Year Built | 1948 |
| Manufacturer's Serial Number | NAV-4-1503 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 5 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | E185 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 205 hp (153 kW) |
| Average Cruising Speed | 126 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | NORTHWEST NAVION INC |
| Street | 16821 SMOKEY POINT BLVD PMB 809 |
| City | ARLINGTON |
| State | WA |
| Zip Code | 98223-8407 |
| Region | Northwest Mountain |
| County | Snohomish County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1955-08-02 |
| Certificate Issue Date | 2010-09-09 |
| Last Action Date | 2021-03-17 |
| Expiration Date | 2028-07-31 |
| Status | Valid Registration |
| Mode S Code | 51272347 |
| Mode S Code Hex | A574E7 |