| Tail Number / N-Number | N159F |
| Manufacturer | GRUMMAN |
| Model | G-21 |
| Year Built | 1944 |
| Manufacturer's Serial Number | B55 |
| 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 | FRESHWATER ADVENTURES INC |
| Street | PO BOX 542 |
| City | DILLINGHAM |
| State | AK |
| Zip Code | 99576-0542 |
| Region | Alaskan |
| County | Dillingham Census Area |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2012-05-21 |
| Last Action Date | 2021-01-26 |
| Expiration Date | 2028-05-31 |
| Status | Valid Registration |
| Mode S Code | 50166033 |
| Mode S Code Hex | A0EC1B |