| Tail Number / N-Number | N5403K |
| Manufacturer | RYAN |
| Model | NAVION B |
| Year Built | 1951 |
| Manufacturer's Serial Number | NAV-4-2303B |
| 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 | LYCOMING |
| Engine Model | GO-435C&D SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 260 hp (194 kW) |
| Average Cruising Speed | 126 miles per hour |
| Type of Registrant | Individual |
| Owner Name | KASER WILLIAM A |
| Street | 560 GULL WING DR |
| City | VERO BEACH |
| State | FL |
| Zip Code | 32968-9643 |
| Region | Southern |
| County | Indian River County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Certificate Issue Date | 2015-07-22 |
| Last Action Date | 2021-04-22 |
| Expiration Date | 2028-07-31 |
| Status | Valid Registration |
| Mode S Code | 51555267 |
| Mode S Code Hex | A6DAB7 |