| Tail Number / N-Number | N421P |
| Manufacturer | CESSNA |
| Model | 421C |
| Manufacturer's Serial Number | 421C1092 |
| 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 | Corporation |
| Owner Name | SELGE LEASING INC |
| Street | 2833 S 11TH ST |
| City | NILES |
| State | MI |
| Zip Code | 49120-4421 |
| Region | Great Lakes |
| County | Berrien County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1981-07-24 |
| Certificate Issue Date | 2021-06-17 |
| Last Action Date | 2021-06-17 |
| Expiration Date | 2028-06-30 |
| Status | Valid Registration |
| Mode S Code | 51200233 |
| Mode S Code Hex | A5009B |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N421P.
| Tail Number / N-Number | N421P |
| Manufacturer | CESSNA |
| Model | 421B |
| Year Built | 1973 |
| Manufacturer's Serial Number | 421B0389 |
| 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 | IO 520 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 285 hp (213 kW) |
| Total Horsepower | 570 hp (425 kW) |
| Average Cruising Speed | 172 miles per hour |
| Type of Registrant | Partnership |
| Owner Name | MOUNTAIN LIFEFLIGHT LP |
| Street | 700 ASH ST |
| City | SUSANVILLE |
| State | CA |
| Zip Code | 96130-3716 |
| County | Berrien County |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1973-03-30 |
| Certificate Issue Date | 2002-08-29 |
| Last Action Date | 2005-12-02 |
| Last Status | A second attempt has been made at mailing a Triennial Aircraft Registration form to the owner with no response |
| Cancellation Date | 2009-09-14 |