| Tail Number / N-Number | N21SM |
| Manufacturer | CIRRUS DESIGN CORP |
| Model | SF50 |
| Year Built | 2018 |
| Manufacturer's Serial Number | 0086 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 7 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | WILLIAMS |
| Engine Model | FJ33-5A |
| Engine Type | Turbo-fan |
| Number of Engines | 1 engine |
| Thrust | 2,000 pounds-force (8.9 kN) |
| Type of Registrant | Individual |
| Owner Name | STANBACK CLARENCE FOSTER |
| Street | 8 WHARFSIDE DR |
| City | NEWPORT COAST |
| State | CA |
| Zip Code | 92657-2109 |
| Region | Western-Pacific |
| County | Orange County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2018-11-16 |
| Certificate Issue Date | 2022-02-25 |
| Last Action Date | 2022-02-25 |
| Expiration Date | 2029-02-28 |
| Status | Valid Registration |
| Mode S Code | 50334305 |
| Mode S Code Hex | A1B8C5 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N21SM.
| Tail Number / N-Number | N21SM |
| Manufacturer | CAMERON BALLOONS |
| Model | O-65 |
| Year Built | 1979 |
| Manufacturer's Serial Number | 473 |
| Aircraft Type | Balloon |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 3 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | NONE |
| Engine Model | NONE |
| Number of Engines | 0 engines |
| Average Cruising Speed | 60 miles per hour |
| Type of Registrant | Individual |
| Owner Name | MILLER BLAINE M JR |
| Street | PO BOX 1974 |
| City | WEST CHESTER |
| State | PA |
| Zip Code | 19380 |
| County | Orange County |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1977-07-10 |
| Certificate Issue Date | 1980-03-19 |
| Last Action Date | 1998-06-12 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2012-08-23 |