| Tail Number / N-Number | N4661S |
| Manufacturer | MANNING-BENSEN |
| Model | B-8M |
| Manufacturer's Serial Number | B8M-DM2 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | MCCULLOCH |
| Engine Model | 4318A&E/0-100 |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 72 hp (54 kW) |
| Average Cruising Speed | 45 miles per hour |
| Type of Registrant | Individual |
| Owner Name | SHEFFIELD DANA C |
| Street | 8031 NW 170TH ST |
| City | FANNING SPRINGS |
| State | FL |
| Zip Code | 32693-7442 |
| Region | Southern |
| County | Gilchrist County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1978-06-22 |
| Certificate Issue Date | 2013-09-23 |
| Last Action Date | 2022-06-16 |
| Expiration Date | 2029-09-30 |
| Status | Valid Registration |
| Mode S Code | 51331161 |
| Mode S Code Hex | A5B271 |