| Tail Number / N-Number | N221X |
| Manufacturer | MAULE |
| Model | M-5-235C |
| Year Built | 1977 |
| Manufacturer's Serial Number | 7139C |
| 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) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-540 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 250 hp (187 kW) |
| Average Cruising Speed | 108 miles per hour |
| Type of Registrant | Individual |
| Owner Name | NAPFLIN ERICH P |
| Street | PO BOX 873095 |
| City | WASILLA |
| State | AK |
| Zip Code | 99687-3095 |
| Region | Alaskan |
| County | Matanuska-Susitna Borough |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1977-09-23 |
| Certificate Issue Date | 1997-12-03 |
| Last Action Date | 2022-05-14 |
| Expiration Date | 2029-06-30 |
| Status | Valid Registration |
| Mode S Code | 50363305 |
| Mode S Code Hex | A1E6C5 |