| Tail Number / N-Number | N4421B |
| Manufacturer | BAC JET PROVOST |
| Model | P84 T3A |
| Year Built | 1965 |
| Manufacturer's Serial Number | PACW11803 |
| 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 | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 1 engine |
| Type of Registrant | Corporation |
| Owner Name | WESTERN SKY AVIATION WARBIRD MUSEUM INC |
| Street | 2050 W CANYON VIEW DR APT 2 |
| City | ST GEORGE |
| State | UT |
| Zip Code | 84770-5802 |
| Region | Northwest Mountain |
| County | Washington County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1993-04-25 |
| Certificate Issue Date | 2007-06-11 |
| Last Action Date | 2020-02-24 |
| Expiration Date | 2027-07-31 |
| Status | Valid Registration |
| Mode S Code | 51252210 |
| Mode S Code Hex | A55488 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N4421B.
| Tail Number / N-Number | N4421B |
| Manufacturer | CESSNA |
| Model | 170B |
| Manufacturer's Serial Number | 26765 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 105 miles per hour |
| Type of Registrant | Individual |
| Owner Name | SCHMIDT EDWARD J |
| Street | GENERAL DELIVERY |
| City | BUDE |
| State | MS |
| Zip Code | 39630 |
| Region | Southwestern |
| County | Washington County |
| Certificate Issue Date | 1967-09-28 |
| Last Status | Valid Registration |
| Cancellation Date | 1970-09-23 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N4421B.
| Tail Number / N-Number | N4421B |
| Manufacturer | MC ALLISTER CARROLL J |
| Model | WIZARD T-38BR503 |
| Manufacturer's Serial Number | 0028 |
| 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 |
| County | Washington County |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |