| Tail Number / N-Number | N421 |
| Manufacturer | CESSNA |
| Model | 421C |
| Year Built | 1977 |
| Manufacturer's Serial Number | 421C0226 |
| 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 | GTSI0-520-F-K |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 435 hp (325 kW) |
| Total Horsepower | 870 hp (649 kW) |
| Average Cruising Speed | 90 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | AERODENTAL INC |
| Street | 24 SANFORD RD |
| City | COLORADO SPRINGS |
| State | CO |
| Zip Code | 80906-4232 |
| Region | Northwest Mountain |
| County | El Paso County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1977-02-03 |
| Certificate Issue Date | 1996-01-11 |
| Last Action Date | 2022-05-17 |
| Expiration Date | 2029-07-31 |
| Status | Valid Registration |
| Mode S Code | 51177525 |
| Mode S Code Hex | A4FF55 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N421.
| Tail Number / N-Number | N421 |
| Manufacturer | BAKER BB & COLLINS MW |
| Model | GLIDER |
| Year Built | 1928 |
| Manufacturer's Serial Number | 1 |
| Aircraft Type | Glider |
| 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) |
| Number of Engines | 0 engines |
| Type of Registrant | Individual |
| Owner Name | COLLINS MAURICE W |
| Street | 530 JUSTIN ST |
| City | GLENDALE |
| State | CA |
| Zip Code | 91201 |
| Region | Western-Pacific |
| County | El Paso County |
| Last Status | Valid Registration |
| Cancellation Date | 1931-11-01 |