| Tail Number / N-Number | N231SM |
| Manufacturer | MOONEY AIRCRAFT CORP. |
| Model | M20K |
| Year Built | 1979 |
| Manufacturer's Serial Number | 25-0317 |
| 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 |
| Type of Registrant | Individual |
| Owner Name | WILLER JIM |
| Street | 4764 BEVERLY LN |
| City | ERIE |
| State | CO |
| Zip Code | 80516-9040 |
| Region | Northwest Mountain |
| County | Weld County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2017-08-22 |
| Last Action Date | 2020-03-23 |
| Expiration Date | 2027-08-31 |
| Status | Valid Registration |
| Mode S Code | 50406723 |
| Mode S Code Hex | A20DD3 |