| Tail Number / N-Number | N4021E |
| Manufacturer | ARBC INC DBA LINDSTRAND |
| Model | 90E |
| Manufacturer's Serial Number | 5707 |
| Aircraft Type | Balloon |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 0 engines |
| Type of Registrant | Individual |
| Owner Name | MAYO STEVEN J |
| Street | 22 CRAIG DR |
| City | MERRIMACK |
| State | NH |
| Zip Code | 03054-3950 |
| Region | New England |
| County | Hillsborough County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2020-06-02 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-06-30 |
| Status | Valid Registration |
| Mode S Code | 51133217 |
| Mode S Code Hex | A4B68F |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N4021E.
| Tail Number / N-Number | N4021E |
| Manufacturer | ROBINSON HELICOPTER |
| Model | R22 BETA |
| Manufacturer's Serial Number | 1548 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | 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 | Corporation |
| Owner Name | S M P LTD |
| Street | 1050 S STATE ST |
| City | DOVER |
| State | DE |
| Zip Code | 19901 |
| County | Hillsborough County |
| Country | US |
| Last Action Date | 1994-11-02 |
| Last Status | Valid Registration |
| Cancellation Date | 1995-02-13 |
| Exported To | VENEZUELA |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N4021E.
| Tail Number / N-Number | N4021E |
| Manufacturer | AERONCA |
| Model | 11BC |
| Manufacturer's Serial Number | 11BC109 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | 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 |
| Average Cruising Speed | 75 miles per hour |
| County | Hillsborough County |