| Tail Number / N-Number | N421LG |
| Manufacturer | CESSNA |
| Model | 421C |
| Manufacturer's Serial Number | 421C1114 |
| 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 | Co-Ownership |
| Owner Name | MCTAGGART SONIA J |
| Other Names |
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| Street | PO BOX 3029 |
| City | ALPINE |
| State | WY |
| Zip Code | 83128-0029 |
| Region | Northwest Mountain |
| County | Lincoln County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1981-09-25 |
| Certificate Issue Date | 2006-09-19 |
| Last Action Date | 2021-03-03 |
| Expiration Date | 2028-06-30 |
| Status | Valid Registration |
| Mode S Code | 51200127 |
| Mode S Code Hex | A50057 |