| Tail Number / N-Number | N645DH |
| Manufacturer | GRUMMAN |
| Model | G-44 |
| Manufacturer's Serial Number | 1329 |
| Aircraft Type | Fixed wing multi engine |
| Category | Amphibian |
| Builder Certification | Type Certificated |
| Number of Seats | 5 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | FAIRCHILD |
| Engine Model | 6-440 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 200 hp (149 kW) |
| Total Horsepower | 400 hp (298 kW) |
| Average Cruising Speed | 131 miles per hour |
| Type of Registrant | Individual |
| Owner Name | HULEN DOUGLAS A |
| Street | 21228 LOWLAND AVE |
| City | EAGLE RIVER |
| State | AK |
| Zip Code | 99577-9564 |
| Region | Alaskan |
| County | Anchorage Municipality |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1960-02-15 |
| Certificate Issue Date | 2020-04-15 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-04-30 |
| Status | Valid Registration |
| Mode S Code | 52074041 |
| Mode S Code Hex | A87821 |