Models
| Model | Type | Registered | Valid | Built |
|---|---|---|---|---|
| 185 | Fixed wing single engine | 62 | 62 | 1945-1947 |
| REARWIN 185 | Fixed wing single engine | 16 | 16 | 1946-1946 |
| REARWIN 175 | Fixed wing single engine | 3 | 2 | 1940-1942 |
| REARWIN 180F | Fixed wing single engine | 2 | 2 | 1941-1941 |
| REARWIN 9000-L | Fixed wing single engine | 2 | 2 | 1938-1938 |
| REARWIN 180 | Fixed wing single engine | 1 | 1 | ?-? |
| REARWIN 7000 | Fixed wing single engine | 1 | 1 | ?-? |
Commonwealth aircraft in the FAA registry
The Federal Aviation Administration (FAA) lists aircraft under the manufacturer name "COMMONWEALTH" in its public registry. As of October 16, 2026, there are 87 registered Commonwealth aircraft in the United States. These records cover 86 valid registrations across seven distinct models. The fleet consists mainly of fixed-wing, single-engine aircraft powered by reciprocating engines. Most of these aircraft were built between 1938 and 1947, with half constructed in 1946 or earlier.
Registered Commonwealth Aircraft
The majority of the fleet, 84 aircraft, holds standard airworthiness certificates, while one is classified as experimental. Registrations are spread across several states, with Washington, Oregon, and Florida each holding eight aircraft. The most common model is the Commonwealth 185, with 62 aircraft recorded. This model was built between 1945 and 1947 and seats two people. Other notable Commonwealth models include the Rearwin 185, which has 16 registrations, and the Rearwin 175, with three. Smaller groups include the Rearwin 180F and Rearwin 9000-L, each with two registrations, and a single Rearwin 180.
Type Certificate Data Sheets
Type certificate data sheets (TCDS) provide the technical specifications for these aircraft. The TCDS A-729, held by Commonwealth Aircraft Inc., covers the Commonwealth 185 model. Each model has its own page with specifications and the type certificate data sheet, and every aircraft has a registration record by N-number. This allows buyers and spotters to verify details for specific Commonwealth N-number lookup requests.
Commonwealth Aircraft Company was an aircraft manufacturer from Valley Stream, New York. Originally Rearwin Aircraft & Engines of Kansas City, the company was renamed in 1942 after it was purchased by a new owner. During World War II, Commonwealth primarily made combat gliders under contract to the Waco Aircraft Company. After World War II, Commonwealth resumed production of the Rearwin-designed Commonwealth Skyranger and consolidated operations in Valley Stream, New York. Commonwealth Aircraft went bankrupt in March 1947 and ceased operations.
Figures from the FAA registry file as of Oct 16, 2026. Company background: Wikipedia, Commonwealth Aircraft.