| Tail Number / N-Number | N421B |
| Manufacturer | TEXTRON AVIATION INC |
| Model | B300C |
| Year Built | 2019 |
| Manufacturer's Serial Number | FM-81 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 18 seats |
| Weight Class | CLASS 2 (12,500 - 19,999 pounds gross take off weight) |
| Engine Manufacturer | P&W CANADA |
| Engine Model | PT6A-60A |
| Engine Type | Turbo-prop |
| Number of Engines | 2 engines |
| Horsepower per Engine | 1,050 hp (783 kW) |
| Total Horsepower | 2,100 hp (1,567 kW) |
| Type of Registrant | Government |
| Owner Name | DEPARTMENT OF HOMELAND SECURITY |
| Street | 1300 PENNSYLVANIA AVE NW # 6.4A |
| City | WASHINGTON |
| State | DC |
| Zip Code | 20229-0002 |
| Region | Eastern |
| County | District of Columbia |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2019-09-22 |
| Certificate Issue Date | 2021-07-10 |
| Last Action Date | 2022-07-27 |
| Expiration Date | 2028-07-31 |
| Status | Valid Registration |
| Mode S Code | 51177557 |
| Mode S Code Hex | A4FF6F |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N421B.
| Tail Number / N-Number | N421B |
| Manufacturer | BEECH |
| Model | 35 |
| Year Built | 1948 |
| Manufacturer's Serial Number | D-1428 |
| 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) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | E185 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 205 hp (153 kW) |
| Average Cruising Speed | 120 miles per hour |
| Type of Registrant | Individual |
| Owner Name | GRIFFITH ANTHONY W |
| Street | HWY 77 AT 79 PO BOX 507 |
| City | ROCKDALE |
| State | TX |
| Zip Code | 76567 |
| County | District of Columbia |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1956-05-31 |
| Certificate Issue Date | 1988-01-25 |
| Last Action Date | 1994-01-28 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2014-10-06 |