| Tail Number / N-Number | N48550 |
| Manufacturer | GRUMMAN |
| Model | G-21A |
| Year Built | 1939 |
| Manufacturer's Serial Number | 1061 |
| Aircraft Type | Fixed wing multi engine |
| Category | Amphibian |
| Builder Certification | Type Certificated |
| Number of Seats | 8 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 | 2 engines |
| Horsepower per Engine | 450 hp (336 kW) |
| Total Horsepower | 900 hp (671 kW) |
| Average Cruising Speed | 150 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | USS ALABAMA BATTLESHIP FOUNDATION INC |
| Street | PO BOX 65 |
| City | MOBILE |
| State | AL |
| Zip Code | 36601-0065 |
| Region | Southern |
| County | Mobile County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1996-05-15 |
| Certificate Issue Date | 2022-04-21 |
| Last Action Date | 2022-04-21 |
| Expiration Date | 2029-04-30 |
| Status | Valid Registration |
| Mode S Code | 51377114 |
| Mode S Code Hex | A5FE4C |