| Tail Number / N-Number | N411RM |
| Manufacturer | MCKUNE-RALPH |
| Model | SMYTH SIDEWINDER |
| Year Built | 1979 |
| Manufacturer's Serial Number | 212139 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-290 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 140 hp (104 kW) |
| Type of Registrant | Individual |
| Owner Name | MCKUNE RALPH L |
| Street | 4228 EL CERRITO WAY |
| City | KLAMATH FALLS |
| State | OR |
| Zip Code | 97603-7790 |
| Region | Northwest Mountain |
| County | Klamath County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1979-11-16 |
| Certificate Issue Date | 1978-10-30 |
| Last Action Date | 2021-06-22 |
| Expiration Date | 2028-09-30 |
| Status | Valid Registration |
| Mode S Code | 51154532 |
| Mode S Code Hex | A4D95A |