| Tail Number / N-Number | N685MD |
| Manufacturer | PIPER |
| Model | PA-23-250 |
| Year Built | 1969 |
| Manufacturer's Serial Number | 27-4295 |
| 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 | LYCOMING |
| Engine Model | IO-540 SER |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 300 hp (224 kW) |
| Total Horsepower | 600 hp (448 kW) |
| Average Cruising Speed | 150 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | ABACUS AUTOMATION INC |
| Street | 264 SHIELDS DR |
| City | BENNINGTON |
| State | VT |
| Zip Code | 05201-8307 |
| Region | New England |
| County | Bennington County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1984-11-06 |
| Certificate Issue Date | 2013-06-18 |
| Last Action Date | 2022-01-17 |
| Expiration Date | 2029-06-30 |
| Status | Valid Registration |
| Mode S Code | 52213341 |
| Mode S Code Hex | A916E1 |