| Tail Number / N-Number | N421BS |
| Manufacturer | SELL ROBERT O |
| Model | VANS RV-9A |
| Year Built | 2004 |
| Manufacturer's Serial Number | 90247 |
| 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 | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Kit Manufacturer | VANS AIRCRAFT INC |
| Kit Model | RV-9A |
| Type of Registrant | Individual |
| Owner Name | SELL ROBERT O |
| Street | 1213 N RUSTY NAIL RD |
| City | PRESCOTT VALLEY |
| State | AZ |
| Zip Code | 86314 |
| Region | Western-Pacific |
| County | Yavapai County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2004-04-03 |
| Certificate Issue Date | 2003-08-29 |
| Last Action Date | 2020-08-23 |
| Expiration Date | 2028-01-31 |
| Status | Valid Registration |
| Mode S Code | 51177600 |
| Mode S Code Hex | A4FF80 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N421BS.
| Tail Number / N-Number | N421BS |
| Manufacturer | CESSNA |
| Model | 421C |
| Manufacturer's Serial Number | 421C0042 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 8 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 90 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | ALLEGRA UNLIMITED INC |
| Street | 5036 WEST 63RD ST |
| City | CHICAGO |
| State | IL |
| Zip Code | 60638 |
| County | Yavapai County |
| Country | US |
| Certificate Issue Date | 1992-12-23 |
| Last Action Date | 1993-02-03 |
| Last Status | Valid Registration |
| Cancellation Date | 1993-04-14 |
| Exported To | GERMANY |