| Tail Number / N-Number | N437JS |
| Manufacturer | SOWALSKY JOHN W |
| Model | EXCALIBUR |
| Year Built | 2022 |
| Manufacturer's Serial Number | 52819 |
| Aircraft Type | Fixed wing single engine |
| Category | Amphibian |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | AEROMOMENT |
| Engine Model | AM13 SERIES |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 100 hp (75 kW) |
| Kit Manufacturer | EXCALIBUR AIRCRAFT |
| Kit Model | EXCALIBUR |
| Type of Registrant | Individual |
| Owner Name | SOWALSKY JOHN W |
| Street | 3927 SKYWAY DR |
| City | NAPLES |
| State | FL |
| Zip Code | 34112-2902 |
| Region | Southern |
| County | Collier County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2022-06-13 |
| Certificate Issue Date | 2021-03-19 |
| Last Action Date | 2021-03-19 |
| Expiration Date | 2028-03-31 |
| Status | Valid Registration |
| Mode S Code | 51236770 |
| Mode S Code Hex | A53DF8 |