| Tail Number / N-Number | N4GM |
| Manufacturer | MCQUISTON |
| Model | WITTMAN TAILWIND W-8 |
| Year Built | 1975 |
| Manufacturer's Serial Number | 237 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not 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 | 0-200 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 100 hp (75 kW) |
| Average Cruising Speed | 112 miles per hour |
| Type of Registrant | Individual |
| Owner Name | HARRIS ROBERT W |
| Street | 665 NEW GALENA RD |
| City | CHALFONT |
| State | PA |
| Zip Code | 18914-1539 |
| Region | Eastern |
| County | Bucks County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1979-06-27 |
| Certificate Issue Date | 2012-12-07 |
| Last Action Date | 2021-08-29 |
| Expiration Date | 2028-12-31 |
| Status | Valid Registration |
| Mode S Code | 51124221 |
| Mode S Code Hex | A4A891 |