| Tail Number / N-Number | N42MK |
| Manufacturer | HEIDENREICH MARK M |
| Model | RANS S-6S |
| Manufacturer's Serial Number | 01 |
| 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) |
| Number of Engines | 1 engine |
| Kit Manufacturer | RANS INC |
| Kit Model | RANS S-6S |
| Type of Registrant | Co-Ownership |
| Owner Name | FAUST WILLIAM G |
| Other Names |
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| Street | 92 SAN MARIN DR |
| City | NOVATO |
| State | CA |
| Zip Code | 94945-1134 |
| Region | Western-Pacific |
| County | Marin County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2012-03-20 |
| Last Action Date | 2020-11-11 |
| Expiration Date | 2028-03-31 |
| Status | Valid Registration |
| Mode S Code | 51175143 |
| Mode S Code Hex | A4FA63 |