| Tail Number / N-Number | N621SR |
| Manufacturer | BOEING |
| Model | A75N1(PT17) |
| Year Built | 1942 |
| Manufacturer's Serial Number | 75-3092 |
| 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 | P&W |
| Engine Model | R-985 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 450 hp (336 kW) |
| Average Cruising Speed | 93 miles per hour |
| Type of Registrant | Individual |
| Owner Name | POLSON MONA L |
| Street | PO BOX 898 |
| City | HASLET |
| State | TX |
| Zip Code | 76052-0898 |
| Region | Southwestern |
| County | Tarrant County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1982-06-09 |
| Certificate Issue Date | 2006-08-07 |
| Last Action Date | 2021-03-16 |
| Expiration Date | 2028-03-31 |
| Status | Valid Registration |
| Mode S Code | 52015624 |
| Mode S Code Hex | A81B94 |