| Tail Number / N-Number | N1121Q |
| Manufacturer | CESSNA |
| Model | 310H |
| Year Built | 1963 |
| Manufacturer's Serial Number | 310H0121 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 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 | Individual |
| Owner Name | TWOMEY KIERAN S |
| Street | 219 G AVE |
| City | CORONADO |
| State | CA |
| Zip Code | 92118-1217 |
| Region | Western-Pacific |
| County | San Diego County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1963-08-16 |
| Certificate Issue Date | 2015-04-21 |
| Last Action Date | 2020-11-16 |
| Expiration Date | 2028-04-30 |
| Status | Valid Registration |
| Mode S Code | 50033053 |
| Mode S Code Hex | A0362B |