| Tail Number / N-Number | N121GM |
| Manufacturer | CESSNA |
| Model | 310D |
| Year Built | 1960 |
| Manufacturer's Serial Number | 39183 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 5 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | I0-470 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 260 hp (194 kW) |
| Total Horsepower | 520 hp (388 kW) |
| Average Cruising Speed | 167 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | SCREW CRAFT PRODUCTS CO CORP |
| Street | 1253 DIVERSEY PARKWAY |
| City | CHICAGO |
| State | IL |
| Zip Code | 60614 |
| Region | Great Lakes |
| County | Cook County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Certificate Issue Date | 1966-10-20 |
| Last Action Date | 1977-01-14 |
| Status | Certificate of Registration has been revoked |
| Mode S Code | 50054013 |
| Mode S Code Hex | A0580B |