| Tail Number / N-Number | N4242J |
| Manufacturer | ZENISEK EDWARD J |
| Model | X-2 GYRO |
| Year Built | 1981 |
| Manufacturer's Serial Number | 001 |
| Aircraft Type | Rotorcraft |
| 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 | MCCULLOCH |
| Engine Model | 4318A&E/0-100 |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 72 hp (54 kW) |
| Type of Registrant | Individual |
| Owner Name | ZENISEK EDWARD J |
| Street | 8200 TISSEL HOLLOW RD |
| City | FAIRFAX |
| State | IA |
| Zip Code | 52228 |
| Region | Central |
| County | Linn County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1984-12-19 |
| Certificate Issue Date | 1981-05-26 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-04-30 |
| Status | Valid Registration |
| Mode S Code | 51206442 |
| Mode S Code Hex | A50D22 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4242J.
| Tail Number / N-Number | N4242J |
| Manufacturer | PIPER |
| Model | PA-28-140 |
| Manufacturer's Serial Number | 28-22595 |
| 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 | 107 miles per hour |
| Type of Registrant | Partnership |
| Owner Name | HERBERT GLEN D |
| Street | RR 6 |
| City | BLOOMFIELD |
| State | IA |
| Zip Code | 52537 |
| Region | Central |
| County | Linn County |
| Certificate Issue Date | 1973-10-05 |
| Last Status | Valid Registration |
| Cancellation Date | 1973-12-14 |
| Exported To | CANADA |