| Tail Number / N-Number | N999S |
| Manufacturer | NAVION |
| Model | NAVION A |
| Manufacturer's Serial Number | NAV-4-1631 |
| 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) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | E185 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 205 hp (153 kW) |
| Average Cruising Speed | 120 miles per hour |
| Type of Registrant | Individual |
| Owner Name | OTT DEAN R |
| Street | PO BOX 507 |
| City | CARROLLTON |
| State | OH |
| Zip Code | 44615-0507 |
| Region | Great Lakes |
| County | Carroll County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1959-02-02 |
| Certificate Issue Date | 2017-05-03 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-05-31 |
| Status | Valid Registration |
| Mode S Code | 53372642 |
| Mode S Code Hex | ADF5A2 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N999S.
| Tail Number / N-Number | N999S |
| Manufacturer | NORTH AMERICAN |
| Model | NAVION |
| Manufacturer's Serial Number | NAV-4-90 |
| 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) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 126 miles per hour |
| Type of Registrant | Individual |
| Owner Name | SOMLO THOMAS |
| Street | 2500 W LAWRENCE AVE |
| City | CHICAGO |
| State | IL |
| Zip Code | 60601 |
| Region | Great Lakes |
| County | Carroll County |
| Certificate Issue Date | 1957-02-07 |
| Last Status | Valid Registration |
| Cancellation Date | 1957-05-28 |