| Tail Number / N-Number | N540J |
| Manufacturer | JOHNS |
| Model | SA-29 |
| Year Built | 2002 |
| Manufacturer's Serial Number | 04 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| 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 | LYCOMING |
| Engine Model | IO-540 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 300 hp (224 kW) |
| Type of Registrant | LLC |
| Owner Name | NEXT AVIATION LLC - AETHER MACHINIS |
| Street | 88 SALEM LN |
| City | EVANSTON |
| State | IL |
| Zip Code | 60203-1218 |
| Region | Great Lakes |
| County | Cook County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2002-10-02 |
| Certificate Issue Date | 2018-05-17 |
| Last Action Date | 2021-02-17 |
| Expiration Date | 2028-05-31 |
| Status | Valid Registration |
| Mode S Code | 51554264 |
| Mode S Code Hex | A6D8B4 |