| Tail Number / N-Number | N421BL |
| Manufacturer | DIAMOND AIRCRAFT IND GMBH |
| Model | DA 42 NG |
| Year Built | 2020 |
| Manufacturer's Serial Number | 42.N388 |
| Aircraft Type | Fixed wing multi 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 | AUSTRO |
| Engine Model | E4-C |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 168 hp (125 kW) |
| Total Horsepower | 336 hp (251 kW) |
| Type of Registrant | LLC |
| Owner Name | M4 AVIATION LLC |
| Street | 64 BOY SCOUT RD |
| City | KUTZTOWN |
| State | PA |
| Zip Code | 19530-9086 |
| Region | Eastern |
| County | Berks County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2020-02-26 |
| Certificate Issue Date | 2022-05-21 |
| Last Action Date | 2022-05-21 |
| Expiration Date | 2029-05-31 |
| Status | Valid Registration |
| Mode S Code | 51177572 |
| Mode S Code Hex | A4FF7A |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N421BL.
| Tail Number / N-Number | N421BL |
| Manufacturer | CESSNA |
| Model | 421C |
| Manufacturer's Serial Number | 421C0605 |
| 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 | Individual |
| Owner Name | BROWN BENNY DBA |
| Other Names |
|
| Street | 10711 S BROADWAY |
| City | OKLAHOMA CITY |
| State | OK |
| Zip Code | 73170 |
| County | Berks County |
| Country | US |
| Certificate Issue Date | 1992-12-01 |
| Last Action Date | 1998-12-16 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 1999-02-09 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N421BL.
| Tail Number / N-Number | N421BL |
| Manufacturer | THOMAS WILBUR D |
| Model | KR-200 |
| Year Built | 1989 |
| Manufacturer's Serial Number | 1 |
| 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 | VOLKSWAGEN |
| Engine Model | CONVERSION |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 36 hp (27 kW) |
| Type of Registrant | Individual |
| Owner Name | SALE REPORTED |
| Street | BRADLEY INTERNATIONAL AIRPORT |
| City | WINDSOR LOCKS |
| State | CT |
| Zip Code | 06096 |
| County | Berks County |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1992-05-01 |
| Last Action Date | 2002-02-04 |
| Last Status | Sale Reported – Canceled |
| Cancellation Date | 2012-08-08 |