| Tail Number / N-Number | N21135 |
| Manufacturer | STINSON |
| Model | SR-10G |
| Year Built | 1937 |
| Manufacturer's Serial Number | 5903 |
| Aircraft Type | Fixed wing single 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 | LYCOMING |
| Engine Model | R680E SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 300 hp (224 kW) |
| Average Cruising Speed | 109 miles per hour |
| Type of Registrant | LLC |
| Owner Name | SHANNON AIR MUSEUM LLC |
| Street | 3380 SHANNON AIRPORT CIR |
| City | FREDERICKSBURG |
| State | VA |
| Zip Code | 22408-2370 |
| Region | Eastern |
| County | Fredericksburg city |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1973-03-26 |
| Certificate Issue Date | 2017-12-07 |
| Last Action Date | 2021-07-07 |
| Expiration Date | 2027-12-31 |
| Status | Valid Registration |
| Mode S Code | 50340030 |
| Mode S Code Hex | A1C018 |