| Tail Number / N-Number | N20DN |
| Manufacturer | SCHEMPP-HIRTH FLUGZEUGBAU GMBH |
| Model | VENTUS 3M |
| Year Built | 2021 |
| Manufacturer's Serial Number | 127 MP |
| Aircraft Type | Glider |
| 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 | SOLO |
| Engine Model | 2625 01 |
| Engine Type | 2 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 53 hp (40 kW) |
| Type of Registrant | Individual |
| Owner Name | NADLER DAVID R |
| Street | 97 CENTRAL ST |
| City | ACTON |
| State | MA |
| Zip Code | 01720-2725 |
| Region | New England |
| County | Middlesex County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2021-06-26 |
| Certificate Issue Date | 2021-06-01 |
| Last Action Date | 2021-06-01 |
| Expiration Date | 2028-06-30 |
| Status | Valid Registration |
| Mode S Code | 50310002 |
| Mode S Code Hex | A19002 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N20DN.
| Tail Number / N-Number | N20DN |
| Manufacturer | NELSON D W |
| Model | 1-DESIGN |
| Manufacturer's Serial Number | 150 |
| 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) |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | NELSON DAVID W |
| Street | 2703 HAWTHORN RD |
| City | MARENGO |
| State | IL |
| Zip Code | 60152-8021 |
| County | Middlesex County |
| Country | US |
| Certificate Issue Date | 1996-07-09 |
| Last Action Date | 2008-07-15 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2013-11-04 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N20DN.
| Tail Number / N-Number | N20DN |
| Manufacturer | SOCATA |
| Model | TB-20 TRINIDAD |
| Manufacturer's Serial Number | 582 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| County | Middlesex County |
| Last Status | N-Number Assigned – but has not yet been registered |
| Cancellation Date | 1989-06-20 |