Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N4921.
| Tail Number / N-Number | N4921 |
| Manufacturer | LEICHTFLUGZEUBAU KLEMM |
| Model | L 20 |
| Manufacturer's Serial Number | 53 |
| 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) |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | SEYPELT WILLIBALD |
| Street | 254 WEST 31ST STREET |
| City | NEW YORK |
| State | NY |
| Zip Code | 10001 |
| Region | Eastern |
| Last Status | Valid Registration |
| Cancellation Date | 1928-12-01 |
| Mode S Code | 51415001 |
| Mode S Code Hex | A61A01 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N4921.
| Tail Number / N-Number | N4921 |
| Manufacturer | LIVINGSTON |
| Model | DOUBLE EAGLE |
| Manufacturer's Serial Number | 7 |
| 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 |
| Average Cruising Speed | 85 miles per hour |
| Last Status | N-Number Assigned – but has not yet been registered |
| Mode S Code | 51415001 |
| Mode S Code Hex | A61A01 |