| Tail Number / N-Number | N110DH |
| Manufacturer | CESSNA |
| Model | 421B |
| Manufacturer's Serial Number | 421B0137 |
| 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 | 172 miles per hour |
| Type of Registrant | Individual |
| Owner Name | WATKINS WILLIAM G IV |
| Street | PO BOX 1026 |
| City | APTOS |
| State | CA |
| Zip Code | 95001-1026 |
| Region | Western-Pacific |
| County | Santa Cruz County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1971-10-26 |
| Certificate Issue Date | 2019-01-22 |
| Last Action Date | 2022-04-15 |
| Expiration Date | 2029-01-31 |
| Status | Valid Registration |
| Mode S Code | 50026206 |
| Mode S Code Hex | A02C86 |