| Tail Number / N-Number | N4399C |
| Manufacturer | CHAMPION |
| Model | 7EC |
| Year Built | 1956 |
| Manufacturer's Serial Number | 7EC-428 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | C90 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 95 hp (71 kW) |
| Average Cruising Speed | 90 miles per hour |
| Type of Registrant | Individual |
| Owner Name | JOHNSTON IAN B |
| Street | 3518 FREMONT AVE N # 103 |
| City | SEATTLE |
| State | WA |
| Zip Code | 98103-8814 |
| Region | Northwest Mountain |
| County | King County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1956-05-23 |
| Certificate Issue Date | 2017-03-08 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-03-31 |
| Status | Valid Registration |
| Mode S Code | 51244043 |
| Mode S Code Hex | A54823 |