| Tail Number / N-Number | N599JS |
| Manufacturer | DAVIS DALTON |
| Model | ULTRA MAX |
| Year Built | 1991 |
| Manufacturer's Serial Number | 001 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Light Sport |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | ROTAX |
| Engine Model | 503 SERIES |
| Engine Type | 2 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 52 hp (39 kW) |
| Type of Registrant | Individual |
| Owner Name | STRAIN GERALD L |
| Street | 1021 ANITA AVE |
| City | BIG BEAR CITY |
| State | CA |
| Zip Code | 92314-9575 |
| Region | Western-Pacific |
| County | San Bernardino County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2007-11-03 |
| Certificate Issue Date | 2007-09-05 |
| Last Action Date | 2021-07-16 |
| Expiration Date | 2028-08-31 |
| Status | Valid Registration |
| Mode S Code | 51737657 |
| Mode S Code Hex | A7BFAF |