| Tail Number / N-Number | N44ML |
| Manufacturer | LUMPERT MARTIN |
| Model | CHALLENGER II SPECIA |
| Year Built | 1995 |
| Manufacturer's Serial Number | CH2-0694CW1166 |
| 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 | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | LUMPERT MARTIN |
| Street | 4259 TROPICAIRE BLVD |
| City | NORTH PORT |
| State | FL |
| Zip Code | 34287 |
| Region | Southern |
| County | Sarasota County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1995-03-09 |
| Certificate Issue Date | 1995-03-07 |
| Last Action Date | 2022-09-05 |
| Expiration Date | 2030-01-31 |
| Status | Valid Registration |
| Mode S Code | 51244542 |
| Mode S Code Hex | A54962 |