| Tail Number / N-Number | N421DM |
| Manufacturer | CESSNA |
| Model | 421C |
| Year Built | 1975 |
| Manufacturer's Serial Number | 421C0005 |
| 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) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | GTSIO-520-C |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 340 hp (254 kW) |
| Total Horsepower | 680 hp (507 kW) |
| Average Cruising Speed | 90 miles per hour |
| Type of Registrant | LLC |
| Owner Name | YINGLING CONSULTATION LLC |
| Street | 108 W 13TH ST |
| City | WILMINGTON |
| State | DE |
| Zip Code | 19801 |
| Region | Eastern |
| County | New Castle County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1975-11-18 |
| Certificate Issue Date | 2016-09-08 |
| Last Action Date | 2022-04-19 |
| Expiration Date | 2029-09-30 |
| Status | Valid Registration |
| Mode S Code | 51177655 |
| Mode S Code Hex | A4FFAD |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N421DM.
| Tail Number / N-Number | N421DM |
| Manufacturer | DOMZALSKI DAVID/MARK |
| Model | B-8M |
| Manufacturer's Serial Number | 01 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | BOMBARDIER |
| Engine Model | ROTAX (ALL) |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Type of Registrant | Partnership |
| Owner Name | DOMZALSKI DAVID B |
| Other Names |
|
| Street | 332 W STANFORD AVE |
| City | GILBERT |
| State | AZ |
| Zip Code | 85234 |
| County | New Castle County |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1987-03-06 |
| Certificate Issue Date | 1985-10-01 |
| Last Action Date | 2007-04-06 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2013-07-19 |