| Tail Number / N-Number | N991AC |
| Manufacturer | PIPER |
| Model | PA-44-180 |
| Year Built | 1979 |
| Manufacturer's Serial Number | 44-8095011 |
| Aircraft Type | Fixed wing multi 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 | LYCOMING |
| Engine Model | O&VO-360 SER |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 180 hp (134 kW) |
| Total Horsepower | 360 hp (269 kW) |
| Type of Registrant | LLC |
| Owner Name | XIN HAN AVIATION LLC |
| Street | 28 LIBERTY ST |
| City | RANDOLPH |
| State | MA |
| Zip Code | 02368-3726 |
| Region | New England |
| County | Norfolk County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1979-11-07 |
| Certificate Issue Date | 2019-06-19 |
| Last Action Date | 2022-05-09 |
| Expiration Date | 2029-06-30 |
| Status | Valid Registration |
| Mode S Code | 53353135 |
| Mode S Code Hex | ADD65D |