| Tail Number / N-Number | N6440D |
| Manufacturer | CESSNA |
| Model | 172N |
| Year Built | 1979 |
| Manufacturer's Serial Number | 17272801 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Average Cruising Speed | 105 miles per hour |
| Type of Registrant | Individual |
| Owner Name | BURNS JOHN MICHAEL III |
| Street | PO BOX 583 |
| City | SAN MATEO |
| State | CA |
| Zip Code | 94401 |
| Region | Western-Pacific |
| County | San Mateo County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1979-05-23 |
| Certificate Issue Date | 1986-06-26 |
| Last Action Date | 2020-06-03 |
| Expiration Date | 2027-09-30 |
| Status | Valid Registration |
| Mode S Code | 52073163 |
| Mode S Code Hex | A87673 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N6440D.
| Tail Number / N-Number | N6440D |
| Manufacturer | NORTH AMERICAN |
| Model | AT-6 |
| Manufacturer's Serial Number | 121-42138 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 141 miles per hour |
| Type of Registrant | Individual |
| Owner Name | HILL ROBERT JR L |
| Street | 985 FIRST AVE SOUTH |
| City | NAPLES |
| State | FL |
| Zip Code | 33940 |
| Region | Southern |
| County | San Mateo County |
| Certificate Issue Date | 1959-12-11 |
| Last Status | Valid Registration |
| Cancellation Date | 1971-02-02 |