| Tail Number / N-Number | N187RR |
| Manufacturer | RUTAN AIRCRAFT FACTORY |
| Model | M 81 |
| Manufacturer's Serial Number | 001 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 5 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | AEROSPORT |
| Engine Model | IO-360 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Individual |
| Owner Name | RUTAN ELBERT L |
| Street | 6383 E DEWEY CIR |
| City | COEUR D ALENE |
| State | ID |
| Zip Code | 83814-7918 |
| Region | Northwest Mountain |
| County | Kootenai County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2011-07-06 |
| Certificate Issue Date | 2018-07-02 |
| Last Action Date | 2021-03-05 |
| Expiration Date | 2028-07-31 |
| Status | Valid Registration |
| Mode S Code | 50256064 |
| Mode S Code Hex | A15C34 |