| Tail Number / N-Number | N81JS |
| Manufacturer | JOHN C SIEBERTS |
| Model | RANS S-21 |
| Year Built | 2022 |
| Manufacturer's Serial Number | 04200097 |
| 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 | CONT MOTOR |
| Engine Model | IOX340 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Kit Manufacturer | RANS DESIGNS INC |
| Kit Model | S-21 OUTBOUND |
| Type of Registrant | Individual |
| Owner Name | SIEBERTS JOHN C |
| Street | 215 MERRY GO ROUND ROCK RD |
| City | SEDONA |
| State | AZ |
| Zip Code | 86351-7715 |
| Region | Western-Pacific |
| County | Coconino County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2022-04-19 |
| Certificate Issue Date | 2022-02-17 |
| Last Action Date | 2022-02-17 |
| Expiration Date | 2029-02-28 |
| Status | Valid Registration |
| Mode S Code | 52603734 |
| Mode S Code Hex | AB07DC |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N81JS.
| Tail Number / N-Number | N81JS |
| Manufacturer | SMART JOHN H |
| Model | MINI COUPE |
| Manufacturer's Serial Number | 265 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | SMART JOHN H |
| Street | 1014 SOUTH 16TH AVE |
| City | YAKIMA |
| State | WA |
| Zip Code | 98902 |
| County | Coconino County |
| Country | US |
| Certificate Issue Date | 1981-01-19 |
| Last Action Date | 2011-01-05 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2014-11-26 |