| Tail Number / N-Number | N1644N |
| Manufacturer | FUNK |
| Model | B85C |
| Year Built | 1947 |
| Manufacturer's Serial Number | 424 |
| 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) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | C85 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 85 hp (63 kW) |
| Average Cruising Speed | 84 miles per hour |
| Type of Registrant | Co-Ownership |
| Owner Name | NAFZIGER BRIAN L TRUSTEE |
| Other Names |
|
| Street | 3115 HAWKSLANDING DR |
| City | CINCINNATI |
| State | OH |
| Zip Code | 45244-3282 |
| Region | Great Lakes |
| County | Hamilton County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1959-05-13 |
| Certificate Issue Date | 2008-12-22 |
| Last Action Date | 2021-08-19 |
| Expiration Date | 2029-01-31 |
| Status | Valid Registration |
| Mode S Code | 50201573 |
| Mode S Code Hex | A1037B |