| Tail Number / N-Number | N303B |
| Manufacturer | BEECH |
| Model | G35 |
| Year Built | 1956 |
| Manufacturer's Serial Number | D-4707 |
| 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 | 131 miles per hour |
| Type of Registrant | Individual |
| Owner Name | MANTEI MARK R |
| Street | 285 MARTIN DR |
| City | BOULDER |
| State | CO |
| Zip Code | 80305-3442 |
| Region | Northwest Mountain |
| County | Boulder County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1956-06-20 |
| Certificate Issue Date | 1999-01-20 |
| Last Action Date | 2021-11-10 |
| Expiration Date | 2029-04-30 |
| Status | Valid Registration |
| Mode S Code | 50625220 |
| Mode S Code Hex | A32A90 |