| Tail Number / N-Number | N521SG |
| Manufacturer | MOONEY |
| Model | M20R |
| Manufacturer's Serial Number | 29-0362 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | IO-550 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 300 hp (224 kW) |
| Type of Registrant | LLC |
| Owner Name | ARCHANGEL TRANSPORTATION LTD |
| Street | 185 BENT TREE RD |
| City | SUNBURY |
| State | OH |
| Zip Code | 43074-9680 |
| Region | Great Lakes |
| County | Delaware County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2005-03-29 |
| Certificate Issue Date | 2021-06-28 |
| Last Action Date | 2021-06-28 |
| Expiration Date | 2028-06-30 |
| Status | Valid Registration |
| Mode S Code | 51507074 |
| Mode S Code Hex | A68E3C |