| Tail Number / N-Number | N731D |
| Manufacturer | BEECH |
| Model | C35 |
| Year Built | 1951 |
| Manufacturer's Serial Number | D-3001 |
| 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 | CONT MOTOR |
| Engine Model | E225 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 225 hp (168 kW) |
| Average Cruising Speed | 120 miles per hour |
| Type of Registrant | Co-Ownership |
| Owner Name | MARTILLA ROBERT W |
| Other Names |
|
| Street | PO BOX 991 |
| City | WASHOUGAL |
| State | WA |
| Zip Code | 98671-0923 |
| Region | Northwest Mountain |
| County | Clark County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1956-01-06 |
| Certificate Issue Date | 2012-01-12 |
| Last Action Date | 2020-08-17 |
| Expiration Date | 2028-01-31 |
| Status | Valid Registration |
| Mode S Code | 52347415 |
| Mode S Code Hex | A9CF0D |