| Tail Number / N-Number | N21PE |
| Manufacturer | MORTENSEN PETER B |
| Model | RV4 |
| Year Built | 2010 |
| Manufacturer's Serial Number | 1230 |
| 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 | O-320-E3D |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 150 hp (112 kW) |
| Kit Manufacturer | VANS AIRCRAFT INC |
| Kit Model | RV-4 |
| Type of Registrant | Individual |
| Owner Name | MORTENSEN PETER B |
| Street | PO BOX 89 |
| City | NEW CUYAMA |
| State | CA |
| Zip Code | 93254-0089 |
| Region | Western-Pacific |
| County | Santa Barbara County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2010-10-13 |
| Certificate Issue Date | 2009-09-11 |
| Last Action Date | 2021-03-24 |
| Expiration Date | 2028-08-31 |
| Status | Valid Registration |
| Mode S Code | 50334163 |
| Mode S Code Hex | A1B873 |