| Tail Number / N-Number | N74589 |
| Manufacturer | DOUGLAS |
| Model | DC3C-S1C3G |
| Year Built | 1942 |
| Manufacturer's Serial Number | 9926 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 32 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Engine Manufacturer | P & W |
| Engine Model | R-1830 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 1,350 hp (1,007 kW) |
| Total Horsepower | 2,700 hp (2,014 kW) |
| Average Cruising Speed | 150 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | TUNISON FOUNDATION INC |
| Street | C/O TRADEWIND AVIATION 3 JULIANO DR |
| City | OXFORD |
| State | CT |
| Zip Code | 06478-1043 |
| Region | New England |
| County | New Haven County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Certificate Issue Date | 2018-12-28 |
| Last Action Date | 2021-07-22 |
| Expiration Date | 2028-12-31 |
| Status | Valid Registration |
| Mode S Code | 52404257 |
| Mode S Code Hex | AA08AF |