| Tail Number / N-Number | N4377K |
| Manufacturer | RYAN |
| Model | NAVION |
| Year Built | 1948 |
| Manufacturer's Serial Number | NAV41377 |
| 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 | E225 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 225 hp (168 kW) |
| Average Cruising Speed | 126 miles per hour |
| Type of Registrant | Individual |
| Owner Name | WILKE BRIAN S |
| Street | 1219 S SALEM LN |
| City | ARLINGTON HEIGHTS |
| State | IL |
| Zip Code | 60005-3049 |
| Region | Great Lakes |
| County | Cook County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1955-10-09 |
| Certificate Issue Date | 2001-09-18 |
| Last Action Date | 2020-11-23 |
| Expiration Date | 2028-04-30 |
| Status | Valid Registration |
| Mode S Code | 51240166 |
| Mode S Code Hex | A54076 |