| Tail Number / N-Number | N2604S |
| Manufacturer | CESSNA |
| Model | 337C |
| Year Built | 1968 |
| Manufacturer's Serial Number | 337-0904 |
| 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 | IO-360 SER |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 300 hp (224 kW) |
| Total Horsepower | 600 hp (448 kW) |
| Average Cruising Speed | 142 miles per hour |
| Type of Registrant | Individual |
| Owner Name | GILLESPIE DAN L |
| Street | 500 SLIFER CT |
| City | DISCOVERY BAY |
| State | CA |
| Zip Code | 94505-2653 |
| Region | Western-Pacific |
| County | Alameda County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1968-05-06 |
| Certificate Issue Date | 2011-09-10 |
| Last Action Date | 2020-07-10 |
| Expiration Date | 2027-09-30 |
| Status | Valid Registration |
| Mode S Code | 50500762 |
| Mode S Code Hex | A281F2 |