Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N4210X.
| Tail Number / N-Number | N4210X |
| Manufacturer | AERO COMMANDER |
| Model | 100-180 |
| Year Built | 1971 |
| Manufacturer's Serial Number | 5210 |
| 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 |
| Average Cruising Speed | 105 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | COURTESY AIRCRAFT LTD |
| Street | 5340 N SECOND ST |
| City | ROCKFORD |
| State | IL |
| Zip Code | 61111 |
| Region | Great Lakes |
| Certificate Issue Date | 1971-05-27 |
| Last Status | Valid Registration |
| Cancellation Date | 1971-09-17 |
| Exported To | CANADA |
| Mode S Code | 51200704 |
| Mode S Code Hex | A501C4 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N4210X.
| Tail Number / N-Number | N4210X |
| Manufacturer | AGUSTA SPA |
| Model | AGUSTA A109 |
| Manufacturer's Serial Number | 7222 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 8 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Last Action Date | 1981-02-07 |
| Last Status | N-Number assigned, has not been registered and is pending cancellation |
| Cancellation Date | 2011-04-08 |
| Mode S Code | 51200704 |
| Mode S Code Hex | A501C4 |