| Tail Number / N-Number | N521JM |
| Manufacturer | PIPER |
| Model | PA-31T1 |
| Manufacturer's Serial Number | 31T-8004040 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 7 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Type of Registrant | LLC |
| Owner Name | JMCY AIR LLC |
| Street | 230 N MARKET ST |
| City | WILMINGTON |
| State | DE |
| Zip Code | 19801-2528 |
| Region | Eastern |
| County | New Castle County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2015-01-23 |
| Last Action Date | 2020-08-28 |
| Expiration Date | 2028-01-31 |
| Status | Valid Registration |
| Mode S Code | 51506571 |
| Mode S Code Hex | A68D79 |