| Tail Number / N-Number | N81BM |
| Manufacturer | CESSNA |
| Model | 175B |
| Year Built | 1961 |
| Manufacturer's Serial Number | 17556914 |
| 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 | GO-300 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 175 hp (131 kW) |
| Average Cruising Speed | 105 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | HOLLROCK ENGINEERING INC |
| Street | PO BOX 378 |
| City | HADLEY |
| State | MA |
| Zip Code | 01035-0378 |
| Region | New England |
| County | Hampshire County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1961-03-25 |
| Certificate Issue Date | 1993-10-07 |
| Last Action Date | 2021-04-26 |
| Expiration Date | 2028-09-30 |
| Status | Valid Registration |
| Mode S Code | 52603450 |
| Mode S Code Hex | AB0728 |