| Tail Number / N-Number | N1089B |
| Manufacturer | MOONEY |
| Model | M20A |
| Year Built | 1958 |
| Manufacturer's Serial Number | 1315 |
| 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 | O&VO-360 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Average Cruising Speed | 127 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | DAKOTA TERRITORY AIR MUSEUM INC |
| Street | PO BOX 195 |
| City | MINOT |
| State | ND |
| Zip Code | 58702-0195 |
| Region | Great Lakes |
| County | Ward County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1958-12-18 |
| Certificate Issue Date | 2011-05-24 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-05-31 |
| Status | Valid Registration |
| Mode S Code | 50023001 |
| Mode S Code Hex | A02601 |