| Tail Number / N-Number | N59HL |
| Manufacturer | HERMAN LEONG |
| Model | HERMAN LEONG ONEX |
| Year Built | 2017 |
| Manufacturer's Serial Number | 0NX0190 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | ULPOWER |
| Engine Model | UL260IS |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 107 hp (80 kW) |
| Kit Manufacturer | SONEX AIRCRAFT LLC |
| Kit Model | ONEX |
| Type of Registrant | Individual |
| Owner Name | LEONG HERMAN |
| Street | 3015 STRATMOOR HILLS AVE |
| City | HENDERSON |
| State | NV |
| Zip Code | 89052-6922 |
| Region | Western-Pacific |
| County | Clark County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2017-06-28 |
| Certificate Issue Date | 2017-06-23 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-06-30 |
| Status | Valid Registration |
| Mode S Code | 51715710 |
| Mode S Code Hex | A79BC8 |