| Tail Number / N-Number | N8991M |
| Manufacturer | BEECH |
| Model | 95-B55 (T42A) |
| Year Built | 1965 |
| Manufacturer's Serial Number | TC-937 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | I0-470 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 260 hp (194 kW) |
| Total Horsepower | 520 hp (388 kW) |
| Average Cruising Speed | 165 miles per hour |
| Type of Registrant | LLC |
| Owner Name | HILGY'S AVIATION LLC |
| Street | 122 S TOMAHAWK AVE |
| City | TOMAHAWK |
| State | WI |
| Zip Code | 54487-1267 |
| Region | Great Lakes |
| County | Lincoln County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1965-07-13 |
| Certificate Issue Date | 2012-07-10 |
| Last Action Date | 2021-07-08 |
| Expiration Date | 2028-07-31 |
| Status | Valid Registration |
| Mode S Code | 53064512 |
| Mode S Code Hex | AC694A |